diff --git a/README.md b/README.md
index 9f410c57..9dbb8e52 100644
--- a/README.md
+++ b/README.md
@@ -31,11 +31,6 @@ Dependency packages
 	# on 64 bits processor for compatibility
 	sudo apt-get install ia32-libs
 
-Copyright (c)
-=============
-
-2011, Edouard DUPIN
-
 License (APACHE v2.0)
 =====================
 
diff --git a/build b/build
index 9d6418ee..db4a587a 160000
--- a/build
+++ b/build
@@ -1 +1 @@
-Subproject commit 9d6418eed9d24b85823aca4f3393e15a8edeb0cb
+Subproject commit db4a587a44ee03fd3be36afadf5101e4993b1356
diff --git a/external/egami b/external/egami
index 6a409ac8..fdeaf201 160000
--- a/external/egami
+++ b/external/egami
@@ -1 +1 @@
-Subproject commit 6a409ac838f57e14da5274ea8506c1129f7cf955
+Subproject commit fdeaf2015c079735f1674b97d196e0f9a0c94a2c
diff --git a/external/ege b/external/ege
index e555759d..36744f57 160000
--- a/external/ege
+++ b/external/ege
@@ -1 +1 @@
-Subproject commit e555759d9ccf2bd1e6de7650f138623baf8a599e
+Subproject commit 36744f57e56fd7c8fd3738f6489c3a091b0aa595
diff --git a/external/ejson b/external/ejson
index b1004030..d9c98697 160000
--- a/external/ejson
+++ b/external/ejson
@@ -1 +1 @@
-Subproject commit b10040303a4c1dc28ae0cd5d565965fffa90bd28
+Subproject commit d9c98697edabf3ded9a46bc1cc83c58b1ab9cd62
diff --git a/external/enet b/external/enet
index 22baa22b..dd76dbf0 160000
--- a/external/enet
+++ b/external/enet
@@ -1 +1 @@
-Subproject commit 22baa22bc23e1202285de3e640911047ea7b395d
+Subproject commit dd76dbf0fd4ad1b16fb7c7ca360cf5c1ad1f41be
diff --git a/external/esvg b/external/esvg
index ac34d1f5..738ee25f 160000
--- a/external/esvg
+++ b/external/esvg
@@ -1 +1 @@
-Subproject commit ac34d1f5317c3fd952b67d5c01ee4183914ae166
+Subproject commit 738ee25fb8016e9fd7a3d62ac28a85eb99b4f197
diff --git a/external/ewolsa b/external/ewolsa
index 11788c2a..c25640d8 160000
--- a/external/ewolsa
+++ b/external/ewolsa
@@ -1 +1 @@
-Subproject commit 11788c2afcb64a906a6a489d1ee96fbfbcdb832d
+Subproject commit c25640d80e675d25660a78dc2dc0a4f20831d4e2
diff --git a/external/exml b/external/exml
index 5b41f407..3ae5e16d 160000
--- a/external/exml
+++ b/external/exml
@@ -1 +1 @@
-Subproject commit 5b41f40739e920276b382254d7d768beaf8237e4
+Subproject commit 3ae5e16d48318ebbd158a6a7f7936000ff64b83f
diff --git a/monk b/monk
index 895e1878..85ebc5ec 160000
--- a/monk
+++ b/monk
@@ -1 +1 @@
-Subproject commit 895e18786ce732e8cc1c282863677c21e1806062
+Subproject commit 85ebc5ec327c3920264de479c8b1049c1b81596c
diff --git a/sources/ewol/object/Object.cpp b/sources/ewol/object/Object.cpp
index 688e4d71..410ddfc2 100644
--- a/sources/ewol/object/Object.cpp
+++ b/sources/ewol/object/Object.cpp
@@ -50,6 +50,7 @@ void ewol::Object::removeParent() {
 ewol::Object::Object() :
   m_objectHasBeenInit(false),
   m_static(false),
+  m_name(*this, "name", ""),
   m_isResource(false) {
 	// note this is nearly atomic ... (but it is enough)
 	m_uniqueId = m_valUID++;
@@ -67,6 +68,7 @@ ewol::Object::~Object() {
 
 void ewol::Object::init() {
 	getObjectManager().add(shared_from_this());
+	parameterDisplay();
 	m_objectHasBeenInit = true;
 }
 
diff --git a/sources/ewol/object/Object.h b/sources/ewol/object/Object.h
index 69c6f084..19bc750e 100644
--- a/sources/ewol/object/Object.h
+++ b/sources/ewol/object/Object.h
@@ -29,6 +29,9 @@ namespace ewol {
 #include <ewol/object/Config.h>
 #include <ewol/object/ConfigElement.h>
 #include <ewol/object/Message.h>
+#include <ewol/object/ParameterList.h>
+#include <ewol/object/Param.h>
+#include <ewol/object/ParamList.h>
 
 #define DECLARE_FACTORY(className) \
 	template<typename ... T> static std::shared_ptr<className> create( T&& ... all ) { \
@@ -62,7 +65,7 @@ namespace ewol {
 	 * @brief Basic message classes for ewol system
 	 * this class mermit at every Object to communicate between them.
 	 */
-	class Object : public std::enable_shared_from_this<Object> {
+	class Object : public std::enable_shared_from_this<Object>, public ewol::object::ParameterList {
 		private:
 			static size_t m_valUID; //!< stic used for the unique ID definition
 		public:
@@ -263,14 +266,14 @@ namespace ewol {
 			std::string getConfig(const char* _config) const;
 			std::string getConfig(const std::string& _config) const; // need search
 		protected:
-			std::string m_name; //!< name of the element ...
+			ewol::object::Param<std::string> m_name; //!< name of the element ...
 		public:
 			/**
 			 * @brief get the Object name
 			 * @return The requested name
 			 */
 			const std::string& getName() const {
-				return m_name;
+				return m_name.get();
 			};
 			/**
 			 * @brief get the Widget name
diff --git a/sources/ewol/object/Param.cpp b/sources/ewol/object/Param.cpp
new file mode 100644
index 00000000..52aa9f23
--- /dev/null
+++ b/sources/ewol/object/Param.cpp
@@ -0,0 +1,154 @@
+/**
+ * @author Edouard DUPIN
+ * 
+ * @copyright 2011, Edouard DUPIN, all right reserved
+ * 
+ * @license APACHE v2.0 (see license file)
+ */
+
+#include <ewol/debug.h>
+#include <ewol/object/Param.h>
+
+//////////////////////////////////////////////////////////////////////////////////
+// int16_t
+//////////////////////////////////////////////////////////////////////////////////
+template<> std::string ewol::object::Param<int16_t>::getType() {
+	return "int16_t";
+}
+
+template<> std::string ewol::object::Param<int16_t>::getValueSpecific(const int16_t& _valueRequested) {
+	return std::to_string(_valueRequested);
+}
+
+template<> void ewol::object::Param<int16_t>::setString(const std::string& _newVal) {
+	set(std::stoi(_newVal));
+}
+
+//////////////////////////////////////////////////////////////////////////////////
+// uint32_t 
+//////////////////////////////////////////////////////////////////////////////////
+template<> std::string ewol::object::Param<uint32_t>::getType() {
+	return "uint32_t";
+}
+
+template<> std::string ewol::object::Param<uint32_t>::getValueSpecific(const uint32_t& _valueRequested) {
+	return std::to_string(_valueRequested);
+}
+
+template<> void ewol::object::Param<uint32_t>::setString(const std::string& _newVal) {
+	set(std::stoul(_newVal));
+}
+
+//////////////////////////////////////////////////////////////////////////////////
+// int32_t
+//////////////////////////////////////////////////////////////////////////////////
+template<> std::string ewol::object::Param<int32_t>::getType() {
+	return "int32_t";
+}
+
+template<> std::string ewol::object::Param<int32_t>::getValueSpecific(const int32_t& _valueRequested) {
+	return std::to_string(_valueRequested);
+}
+
+template<> void ewol::object::Param<int32_t>::setString(const std::string& _newVal) {
+	set(std::stol(_newVal));
+}
+
+//////////////////////////////////////////////////////////////////////////////////
+// uint64_t
+//////////////////////////////////////////////////////////////////////////////////
+template<> std::string ewol::object::Param<uint64_t>::getType() {
+	return "uint64_t";
+}
+
+template<> std::string ewol::object::Param<uint64_t>::getValueSpecific(const uint64_t& _valueRequested) {
+	return std::to_string(_valueRequested);
+}
+
+template<> void ewol::object::Param<uint64_t>::setString(const std::string& _newVal) {
+	set(std::stoull(_newVal));
+}
+
+//////////////////////////////////////////////////////////////////////////////////
+// Int64_t
+//////////////////////////////////////////////////////////////////////////////////
+template<> std::string ewol::object::Param<int64_t>::getType() {
+	return "int64_t";
+}
+
+template<> std::string ewol::object::Param<int64_t>::getValueSpecific(const int64_t& _valueRequested) {
+	return std::to_string(_valueRequested);
+}
+
+template<> void ewol::object::Param<int64_t>::setString(const std::string& _newVal) {
+	set(std::stoll(_newVal));
+}
+
+//////////////////////////////////////////////////////////////////////////////////
+// Float
+//////////////////////////////////////////////////////////////////////////////////
+template<> std::string ewol::object::Param<float>::getType() {
+	return "float";
+}
+
+template<> std::string ewol::object::Param<float>::getValueSpecific(const float& _valueRequested) {
+	return std::to_string(_valueRequested);
+}
+
+template<> void ewol::object::Param<float>::setString(const std::string& _newVal) {
+	set(std::stof(_newVal));
+}
+
+
+//////////////////////////////////////////////////////////////////////////////////
+// Double
+//////////////////////////////////////////////////////////////////////////////////
+template<> std::string ewol::object::Param<double>::getType() {
+	return "double";
+}
+
+template<> std::string ewol::object::Param<double>::getValueSpecific(const double& _valueRequested) {
+	return std::to_string(_valueRequested);
+}
+
+template<> void ewol::object::Param<double>::setString(const std::string& _newVal) {
+	set(std::stod(_newVal));
+}
+
+
+//////////////////////////////////////////////////////////////////////////////////
+// Boolean
+//////////////////////////////////////////////////////////////////////////////////
+
+template<> std::string ewol::object::Param<bool>::getValueSpecific(const bool& _valueRequested) {
+	if (_valueRequested == true) {
+		return "true";
+	}
+	return "false";
+}
+
+template<> void ewol::object::Param<bool>::setString(const std::string& _newVal) {
+	if(    std::tolower(_newVal) == "true"
+	    || std::tolower(_newVal) == "enable"
+	    || _newVal == "1") {
+		set(true);
+	} else {
+		set(false);
+	}
+}
+
+
+//////////////////////////////////////////////////////////////////////////////////
+// string
+//////////////////////////////////////////////////////////////////////////////////
+
+
+template<> std::string ewol::object::Param<std::string>::getValueSpecific(const std::string& _valueRequested) {
+	return _valueRequested;
+}
+
+template<> void ewol::object::Param<std::string>::setString(const std::string& _newVal) {
+	set(_newVal);
+}
+
+
diff --git a/sources/ewol/object/Param.h b/sources/ewol/object/Param.h
new file mode 100644
index 00000000..c573692d
--- /dev/null
+++ b/sources/ewol/object/Param.h
@@ -0,0 +1,169 @@
+/**
+ * @author Edouard DUPIN
+ * 
+ * @copyright 2011, Edouard DUPIN, all right reserved
+ * 
+ * @license APACHE v2.0 (see license file)
+ */
+
+#ifndef __EWOL_PARAM_TYPE_H__
+#define __EWOL_PARAM_TYPE_H__
+
+#include <ewol/object/ParameterList.h>
+#include <ewol/object/Parameter.h>
+#include <etk/math/Vector2D.h>
+
+
+namespace ewol {
+	namespace object {
+		template<typename MY_TYPE> class Param : public Parameter {
+			private:
+				MY_TYPE m_value; //!< Current value.
+				MY_TYPE m_min; //!< Minimum value.
+				MY_TYPE m_max; //!< Maximum value.
+				MY_TYPE m_default; //!< Default value.
+			public:
+				/**
+				 * @brief Create a parameter with a specific type.
+				 * @param[in] blockLink Pointer on the reference block (must be define for upper class.
+				 * @param[in] name Static name of the parameter.
+				 * @param[in] defaultValue Default value of the parameter.
+				 * @param[in] min Minumum value.
+				 * @param[in] max Maximum value
+				 */
+				template<typename TYPE, typename = typename
+				         std::enable_if<    std::is_same<std::string, TYPE>::value
+				                         || std::is_same<char[1], TYPE>::value
+				                         || std::is_same<bvec2, TYPE>::value
+				                         || std::is_same<bvec3, TYPE>::value
+				                         || std::is_same<vec2, TYPE>::value
+				                         || std::is_same<vec3, TYPE>::value
+				                         || std::is_same<ivec2, TYPE>::value
+				                         || std::is_same<ivec3, TYPE>::value
+				                         || std::is_same<uivec2, TYPE>::value
+				                         || std::is_same<uivec3, TYPE>::value>::type>
+				Param(ewol::object::ParameterList& _objectLink,
+				      const std::string& _name,
+				      const TYPE& _defaultValue) :
+				  Parameter(_objectLink, _name),
+				  m_value(_defaultValue),
+				  m_default(_defaultValue) {
+					
+				};
+				template<typename TYPE, typename = typename std::enable_if<!std::is_same<std::string, TYPE>::value>::type>
+				Param(ewol::object::ParameterList& _objectLink,
+				      const std::string& _name,
+				      const TYPE& _defaultValue,
+				      const TYPE& _min,
+				      const TYPE& _max) :
+				  Parameter(_objectLink, _name),
+				  m_value(_defaultValue),
+				  m_min(_min),
+				  m_max(_max),
+				  m_default(_defaultValue) {
+					
+				};
+				/**
+				 * @brief Destructor.
+				 */
+				virtual ~Param() { };
+				// herited methode
+				virtual std::string getType();
+				// herited methode
+				virtual std::string getString() {
+					return getValueSpecific(m_value);
+				};
+				// herited methode
+				virtual std::string getDefault() {
+					return getValueSpecific(m_default);
+				};
+				// herited methode
+				virtual void setString(const std::string& _newVal);
+				// herited methode
+				virtual std::string getInfo();
+				// herited methode
+				virtual bool isDefault() {
+					return m_value == m_default;
+				}
+				// herited methode
+				virtual void setDefault() {
+					m_value = m_default;
+				}
+			public:
+				/**
+				 * @brief Get the value of the current parameter.
+				 * @note For performence, this function must be inline
+				 * @return the Reference value
+				 */
+				const inline MY_TYPE& get() const {
+					return m_value;
+				};
+				/**
+				 * @brief Set a new value for this parameter
+				 * @param[in] newVal New value to set (set the nearest value if range is set)
+				 */
+				void set(const MY_TYPE& _newVal);
+			private:
+				/**
+				 * @brief Get the string of the specify value.
+				 * @return convetion of the velue in string.
+				 */
+				std::string getValueSpecific(const MY_TYPE& _valueRequested);
+			public:
+				/**
+				 * @brief assignement operator.
+				 * @param[in] newVal The new value of the parameter.
+				 */
+				const Param<MY_TYPE>& operator= (const MY_TYPE& _newVal) {
+					set(_newVal);
+					return *this;
+				};
+				operator MY_TYPE() {
+					return m_value;
+				}
+		};
+		template<> std::string Param<bool>::getType() {
+			return "bool";
+		}
+		template<> std::string Param<std::string>::getType() {
+			return "string";
+		}
+		template<>
+		std::string Param<bool>::getInfo() {
+			return getType() + " default=" + (m_default?"true":"false");
+		}
+		template<>
+		std::string Param<std::string>::getInfo() {
+			return getType() + " default=" + m_default;
+		}
+		template<typename MY_TYPE>
+		std::string Param<MY_TYPE>::getInfo() {
+			return getType() + " default= (heterogen type)";
+			/*
+			if (m_min == m_max) {
+				return getType() + " default=" + std::to_string(m_default);
+			}
+			return getType() + " [" + std::to_string(m_min) + ".." + std::to_string(m_max) + "] default=" + std::to_string(m_default);
+			*/
+		}
+		
+		template<>
+		void Param<std::string>::set(const std::string& _newVal) {
+			m_value = _newVal;
+		};
+		template<typename MY_TYPE>
+		void Param<MY_TYPE>::set(const MY_TYPE& _newVal) {
+			if (m_min == m_max) {
+				m_value = _newVal;
+			} else {
+				m_value = std::avg(m_min, _newVal, m_max);
+			}
+		};
+		
+		template<typename MY_TYPE> std::ostream& operator <<(std::ostream& _os, const ewol::object::Param<MY_TYPE>& _obj) {
+			_os << _obj.get();
+			return _os;
+		}
+	};
+};
+#endif
diff --git a/sources/ewol/object/ParamList.cpp b/sources/ewol/object/ParamList.cpp
new file mode 100644
index 00000000..9276590e
--- /dev/null
+++ b/sources/ewol/object/ParamList.cpp
@@ -0,0 +1,70 @@
+/**
+ * @author Edouard DUPIN
+ * 
+ * @copyright 2011, Edouard DUPIN, all right reserved
+ * 
+ * @license APACHE v2.0 (see license file)
+ */
+
+#include <ewol/debug.h>
+#include <ewol/object/ParamList.h>
+
+void ewol::object::ParamList::add(int64_t _value, const std::string& _name, const std::string& _description) {
+	auto it = m_list.find(_name);
+	if (it != m_list.end()) {
+		it->second = _value;
+		return;
+	}
+	m_list.insert(std::make_pair(_name, _value));
+}
+
+std::string ewol::object::ParamList::getElement(int64_t _intValue) {
+	for (auto &it : m_list) {
+		if (it.second == _intValue) {
+			return it.first;
+		}
+	}
+	return "???";
+}
+
+std::string ewol::object::ParamList::getString() {
+	return getElement(m_value);
+}
+
+std::string ewol::object::ParamList::getDefault() {
+	return getElement(m_default);
+}
+
+std::string ewol::object::ParamList::getInfo() {
+	return "List default=" + getElement(m_default);
+}
+
+void ewol::object::ParamList::setString(const std::string& _newVal) {
+	auto it = m_list.find(_newVal);
+	if (it != m_list.end()) {
+		m_value = it->second;
+		return;
+	}
+	EWOL_WARNING("paramList value='" << _newVal << "' is not un the list ... ==> no change");
+	for (auto &it : m_list) {
+		EWOL_DEBUG("        element : " << it.first);
+	}
+}
+
+
+void ewol::object::ParamList::set(int64_t _newVal) {
+	for (auto &it : m_list) {
+		if (it.second == _newVal) {
+			m_value = it.second;
+			return;
+		}
+	}
+	EWOL_WARNING("paramList value=" << _newVal << " is not un the list ... ==> no change");
+}
+
+
+std::ostream& ewol::object::operator <<(std::ostream& _os, const ewol::object::ParamList& _obj) {
+	_os << _obj.get();
+	return _os;
+}
+
diff --git a/sources/ewol/object/ParamList.h b/sources/ewol/object/ParamList.h
new file mode 100644
index 00000000..3ded53f9
--- /dev/null
+++ b/sources/ewol/object/ParamList.h
@@ -0,0 +1,99 @@
+/**
+ * @author Edouard DUPIN
+ * 
+ * @copyright 2011, Edouard DUPIN, all right reserved
+ * 
+ * @license APACHE v2.0 (see license file)
+ */
+
+#ifndef __EWOL_PARAM_LIST_H__
+#define __EWOL_PARAM_LIST_H__
+
+#include <ewol/object/ParameterList.h>
+#include <ewol/object/Parameter.h>
+#include <map>
+
+namespace ewol {
+	namespace object {
+		class ParamList : public Parameter {
+			private:
+				int64_t m_value; //!< Element value ==> can be directly used.
+				int64_t m_default; //!< Default value.
+				std::map<std::string, int64_t> m_list; //!< pointer on the list of all elements.
+			public:
+				/**
+				 * @brief Create a parameter with List of element parameter.
+				 * @param[in] blockLink Pointer on the reference block (must be define for upper class).
+				 * @param[in] name Static name of the parameter.
+				 */
+				ParamList(ewol::object::ParameterList& _objectLink,
+				          const std::string& _name) :
+				  Parameter(_objectLink, _name),
+				  m_value(0),
+				  m_default(0) {
+					
+				};
+				/**
+				 * @brief Destructor.
+				 */
+				virtual ~ParamList() {
+					
+				};
+				void add(int64_t _value, const std::string& _name, const std::string& _description = "");
+				// herited methode
+				virtual std::string getType() {
+					return "list";
+				};
+				// herited methode
+				virtual std::string getString();
+				// herited methode
+				virtual std::string getDefault();
+				// herited methode
+				virtual void setString(const std::string& _newVal);
+				// herited methode
+				virtual std::string getInfo();
+				// herited methode
+				virtual bool isDefault() {
+					return m_value == m_default;
+				}
+				// herited methode
+				virtual void setDefault() {
+					m_value = m_default;
+				}
+				/**
+				 * @brief Get the value of the current parameter.
+				 * @return the Reference value
+				 */
+				const inline int64_t& get() const {
+					return m_value;
+				};
+				/**
+				 * @brief Set the value of the current parameter.
+				 * @param[in] _newVal New value of the parameter. (not set if out of range)
+				 */
+				void set(int64_t _newVal);
+			private:
+				/**
+				 * @brief Get the element description from real Value.
+				 * @param[in] _intValue value that might be converted in string.
+				 * @return the description string coresponding to this ID.
+				 */
+				std::string getElement(int64_t _intValue);
+			public:
+				/**
+				 * @brief assignement operator.
+				 * @param[in] newVal The new value of the parameter.
+				 */
+				const ParamList& operator= (int64_t _newVal) {
+					set(_newVal);
+					return *this;
+				}
+				operator int64_t() {
+					return m_value;
+				}
+		};
+		std::ostream& operator <<(std::ostream& _os, const ewol::object::ParamList& _obj);
+	};
+};
+#endif
+
diff --git a/sources/ewol/object/Parameter.cpp b/sources/ewol/object/Parameter.cpp
new file mode 100644
index 00000000..16789c9c
--- /dev/null
+++ b/sources/ewol/object/Parameter.cpp
@@ -0,0 +1,19 @@
+/**
+ * @author Edouard DUPIN
+ * 
+ * @copyright 2011, Edouard DUPIN, all right reserved
+ * 
+ * @license APACHE v2.0 (see license file)
+ */
+
+#include <ewol/debug.h>
+#include <ewol/object/ParameterList.h>
+#include <ewol/object/Parameter.h>
+
+
+ewol::object::Parameter::Parameter(ewol::object::ParameterList& _objectLink, const std::string& _name) :
+  m_name(_name) {
+	// add a reference on the current parameter ...
+	_objectLink.parameterAdd(this);
+}
+
diff --git a/sources/ewol/object/Parameter.h b/sources/ewol/object/Parameter.h
new file mode 100644
index 00000000..894ca3ec
--- /dev/null
+++ b/sources/ewol/object/Parameter.h
@@ -0,0 +1,69 @@
+/**
+ * @author Edouard DUPIN
+ * 
+ * @copyright 2011, Edouard DUPIN, all right reserved
+ * 
+ * @license APACHE v2.0 (see license file)
+ */
+
+#include <ewol/object/ParameterList.h>
+
+#ifndef __EWOL_PARAMETER_H__
+#define __EWOL_PARAMETER_H__
+
+#include <string>
+
+namespace ewol {
+	namespace object {
+		class Parameter {
+			private:
+				std::string m_name;
+			public:
+				Parameter(ewol::object::ParameterList& _objectLink, const std::string& _name);
+				virtual ~Parameter() { };
+				/**
+				 * @brief Get the name of the parameter.
+				 * @return The name of the parameter
+				 */
+				virtual std::string getName() {
+					return m_name;
+				};
+				/**
+				 * @brief Get the type of the parameter in string mode.
+				 * @return The string type of the parameter.
+				 */
+				virtual std::string getType() = 0;
+				/**
+				 * @brief Get the string of the current value of the parameter.
+				 * @return The string description of the value.
+				 */
+				virtual std::string getString() = 0;
+				/**
+				 * @brief Get the string of the default value of the parameter.
+				 * @return the string decription of the default value.
+				 */
+				virtual std::string getDefault() = 0;
+				/**
+				 * @brief Set a new value of the parameter (with string interface).
+				 * @param[in] _newVal New value of the parameters.
+				 */
+				virtual void setString(const std::string& _newVal) = 0;
+				/**
+				 * @brief Description of the parameters.
+				 * @return Descriptive information of the parameter (for remote UI).
+				 */
+				virtual std::string getInfo() = 0;
+				/**
+				 * @brief Check if the value is the default
+				 * @return true : the vakue is the default one, false otherwise.
+				 */
+				virtual bool isDefault() = 0;
+				/**
+				 * @brief Reset the value to the default value.
+				 */
+				virtual void setDefault() = 0;
+		};
+	};
+};
+
+#endif
diff --git a/sources/ewol/object/ParameterList.cpp b/sources/ewol/object/ParameterList.cpp
new file mode 100644
index 00000000..018527e7
--- /dev/null
+++ b/sources/ewol/object/ParameterList.cpp
@@ -0,0 +1,75 @@
+/**
+ * @author Edouard DUPIN
+ * 
+ * @copyright 2011, Edouard DUPIN, all right reserved
+ * 
+ * @license APACHE v2.0 (see license file)
+ */
+
+#include <ewol/debug.h>
+#include <ewol/object/ParameterList.h>
+#include <ewol/object/Parameter.h>
+
+ewol::object::ParameterList::ParameterList() {
+	
+}
+
+ewol::object::ParameterList::~ParameterList() {
+	parameterClean();
+}
+
+// note this pointer is not allocated and not free at the end of the class
+void ewol::object::ParameterList::parameterAdd(Parameter* _pointerOnParameter) {
+	if (_pointerOnParameter == nullptr) {
+		EWOL_ERROR("Try to link a nullptr parameters");
+		return;
+	}
+	m_list.push_back(_pointerOnParameter);
+}
+
+void ewol::object::ParameterList::parameterClean() {
+	// remove all pointer on these parameters
+	m_list.clear();
+}
+
+// Note no lock is needed at this level, because the lock is done is the upper elements ...
+// the parameter set might be done with a pool of parameter, allone, the overhed is bigger ...
+bool ewol::object::ParameterList::parameterSet(const std::string& _parameter, const std::string& _value) {
+	for (auto &it : m_list) {
+		if(    it != nullptr
+		    && it->getName() == _parameter) {
+			it->setString(_value);
+			return true;
+		}
+	}
+	// can not find the parameters :
+	return false;
+}
+
+std::string ewol::object::ParameterList::parameterGet(const std::string& _parameter) {
+	for (auto &it : m_list) {
+		if(    it != nullptr
+		    && it->getName() == _parameter) {
+			return it->getString();
+		}
+	}
+	return "???";
+}
+
+void ewol::object::ParameterList::parameterDisplay(bool _changeOnly) {
+	EWOL_INFO("    Object parameters:");
+	for (auto &it : m_list) {
+		if(it != nullptr) {
+			std::string paramName = it->getName();
+			std::string paramVal = it->getString();
+			std::string paramInfo = it->getInfo();
+			if (    _changeOnly == false
+			     || it->isDefault() == false) {
+				EWOL_INFO("    |       param='" << paramName << "' value=" << paramVal << "     (" << paramInfo << ")");
+			}
+		} else {
+			EWOL_INFO("    |       param=nullptr");
+		}
+	}
+}
+
diff --git a/sources/ewol/object/ParameterList.h b/sources/ewol/object/ParameterList.h
new file mode 100644
index 00000000..1c883013
--- /dev/null
+++ b/sources/ewol/object/ParameterList.h
@@ -0,0 +1,65 @@
+/**
+ * @author Edouard DUPIN
+ * 
+ * @copyright 2011, Edouard DUPIN, all right reserved
+ * 
+ * @license APACHE v2.0 (see license file)
+ */
+
+
+#ifndef __EWOL_PARAMETER_LIST_H__
+#define __EWOL_PARAMETER_LIST_H__
+
+#include <vector>
+
+namespace ewol {
+	namespace object {
+		class Parameter;
+		class ParameterList {
+			friend class ewol::object::Parameter; // to register parameter in the list.
+			private:
+				std::vector<ewol::object::Parameter*> m_list;  //!< list of availlable Parameters
+			public:
+				/**
+				 * @brief Constructor.
+				 */
+				ParameterList();
+				/**
+				 * @brief Destructor.
+				 */
+				~ParameterList();
+				/**
+				 * @brief Register a parameter class pointer in the List of parameters
+				 * @note This class does not destroy the parameter pointer!!!
+				 * @param[in] pointerOnParameter Pointer on the parameter that might be added.
+				 */
+				void parameterAdd(Parameter* _pointerOnParameter);
+				/**
+				 * @brief Remove all the parameter reference in this class. 
+				 * @note no delete, just clean and inform that a parameter has not been removed.
+				 */
+				void parameterClean();
+				/**
+				 * @brief Set a specific value to the parameter reference name.
+				 * @param[in] parameter The parameter string name.
+				 * @param[in] value The new value of the parameter (string).
+				 * @return true Parameter update.
+				 * @return false Parameter not update.
+				 */
+				bool parameterSet(const std::string& _parameter, const std::string& _value);
+				/**
+				 * @brief Get a specific value of the parameter reference name.
+				 * @param[in] parameter The parameter string name.
+				 * @return The value of the parameter (string).
+				 */
+				std::string parameterGet(const std::string& _parameter);
+				/**
+				 * @brief Display all the parameter value with there name.
+				 * @param[in] changeOnly check at true if the user want to display only parameter that are not at default value.
+				 */
+				void parameterDisplay(bool _changeOnly = false);
+		};
+	};
+};
+
+#endif
diff --git a/sources/ewol/widget/ButtonColor.cpp b/sources/ewol/widget/ButtonColor.cpp
index 59530475..5880d06c 100644
--- a/sources/ewol/widget/ButtonColor.cpp
+++ b/sources/ewol/widget/ButtonColor.cpp
@@ -96,12 +96,12 @@ void ewol::widget::ButtonColor::onRegenerateDisplay() {
 	                   (m_size.y() - m_minSize.y()) / 2.0,
 	                   0);
 	
-	if (true == m_userFill.x()) {
+	if (true == m_userFill.get().x()) {
 		localSize.setX(m_size.x());
 		tmpOrigin.setX(0);
 		tmpTextOrigin.setX(0);
 	}
-	if (true == m_userFill.y()) {
+	if (true == m_userFill.get().y()) {
 		localSize.setY(m_size.y());
 	}
 	tmpOrigin += vec3(padding.xLeft(), padding.yButtom(), 0);
@@ -123,7 +123,7 @@ void ewol::widget::ButtonColor::onRegenerateDisplay() {
 	m_text.print(label);
 	
 	
-	if (true == m_userFill.y()) {
+	if (true == m_userFill.get().y()) {
 		tmpOrigin.setY(padding.yButtom());
 	}
 	
diff --git a/sources/ewol/widget/ColorBar.cpp b/sources/ewol/widget/ColorBar.cpp
index dae54d95..e9331f9f 100644
--- a/sources/ewol/widget/ColorBar.cpp
+++ b/sources/ewol/widget/ColorBar.cpp
@@ -80,11 +80,11 @@ void ewol::widget::ColorBar::onRegenerateDisplay() {
 		int32_t tmpOriginX = (m_size.x() - m_minSize.x()) / 2;
 		int32_t tmpOriginY = (m_size.y() - m_minSize.y()) / 2;
 		
-		if (true == m_userFill.x()) {
+		if (true == m_userFill.get().x()) {
 			tmpSizeX = m_size.x();
 			tmpOriginX = 0;
 		}
-		if (true == m_userFill.y()) {
+		if (true == m_userFill.get().y()) {
 			tmpSizeY = m_size.y();
 			tmpOriginY = 0;
 		}
diff --git a/sources/ewol/widget/Container2.cpp b/sources/ewol/widget/Container2.cpp
index b33e70c5..3ea2c4c4 100644
--- a/sources/ewol/widget/Container2.cpp
+++ b/sources/ewol/widget/Container2.cpp
@@ -114,10 +114,10 @@ ewol::Padding ewol::widget::Container2::calculateSizePadded(const vec2& _availla
 	}
 	// Checkin the filling properties  == > for the subElements:
 	vec2 subElementSize = m_minSize;
-	if (m_userFill.x() == true) {
+	if (m_userFill.get().x() == true) {
 		subElementSize.setX(m_size.x());
 	}
-	if (m_userFill.y() == true) {
+	if (m_userFill.get().y() == true) {
 		subElementSize.setY(m_size.y());
 	}
 	vec2 origin = (m_size - subElementSize)*0.5f + vec2(_padding.xLeft(), _padding.yButtom());
diff --git a/sources/ewol/widget/Entry.cpp b/sources/ewol/widget/Entry.cpp
index 6033f4df..2232414a 100644
--- a/sources/ewol/widget/Entry.cpp
+++ b/sources/ewol/widget/Entry.cpp
@@ -146,10 +146,10 @@ void ewol::widget::Entry::onRegenerateDisplay() {
 		ewol::Padding padding = m_shaper.getPadding();
 		
 		vec2 tmpSizeShaper = m_minSize;
-		if (true == m_userFill.x()) {
+		if (true == m_userFill.get().x()) {
 			tmpSizeShaper.setX(m_size.x());
 		}
-		if (true == m_userFill.y()) {
+		if (true == m_userFill.get().y()) {
 			tmpSizeShaper.setY(m_size.y());
 		}
 		
@@ -508,7 +508,7 @@ void ewol::widget::Entry::updateTextPosition() {
 	ewol::Padding padding = m_shaper.getPadding();
 	
 	int32_t tmpSizeX = m_minSize.x();
-	if (true == m_userFill.x()) {
+	if (true == m_userFill.get().x()) {
 		tmpSizeX = m_size.x();
 	}
 	int32_t tmpUserSize = tmpSizeX - padding.x();
diff --git a/sources/ewol/widget/Image.cpp b/sources/ewol/widget/Image.cpp
index 24b58772..3a01e064 100644
--- a/sources/ewol/widget/Image.cpp
+++ b/sources/ewol/widget/Image.cpp
@@ -156,12 +156,12 @@ void ewol::widget::Image::onRegenerateDisplay() {
 		vec2 ratioSizeDisplayRequested = m_posStop - m_posStart;
 		//imageRealSizeMax *= ratioSizeDisplayRequested;
 		
-		if (m_userFill.x() == true) {
+		if (m_userFill.get().x() == true) {
 			imageRealSize.setX(imageRealSizeMax.x());
 		} else {
 			origin.setX(origin.x() + (m_size.x()-m_minSize.x())*0.5f);
 		}
-		if (m_userFill.y() == true) {
+		if (m_userFill.get().y() == true) {
 			imageRealSize.setY(imageRealSizeMax.y());
 		} else {
 			origin.setY(origin.y() + (m_size.y()-m_minSize.y())*0.5f);
diff --git a/sources/ewol/widget/Label.cpp b/sources/ewol/widget/Label.cpp
index 32189c3f..41382510 100644
--- a/sources/ewol/widget/Label.cpp
+++ b/sources/ewol/widget/Label.cpp
@@ -99,11 +99,11 @@ void ewol::widget::Label::onRegenerateDisplay() {
 	                   (m_size.y() - m_minSize.y()) / 2.0,
 	                   0);
 	
-	if (m_userFill.x() == true) {
+	if (m_userFill.get().x() == true) {
 		localSize.setX(m_size.x());
 		tmpTextOrigin.setX(0);
 	}
-	if (m_userFill.y() == true) {
+	if (m_userFill.get().y() == true) {
 		localSize.setY(m_size.y());
 		tmpTextOrigin.setY(m_size.y() - 2*paddingSize - curentTextSize.y());
 	}
diff --git a/sources/ewol/widget/Widget.cpp b/sources/ewol/widget/Widget.cpp
index ba41ec92..62ccc320 100644
--- a/sources/ewol/widget/Widget.cpp
+++ b/sources/ewol/widget/Widget.cpp
@@ -114,7 +114,7 @@ ewol::Widget::Widget() :
   m_userMinSize(vec2(0,0),ewol::Dimension::Pixel),
   m_userMaxSize(vec2(ULTIMATE_MAX_SIZE,ULTIMATE_MAX_SIZE),ewol::Dimension::Pixel),
   m_userExpand(false,false),
-  m_userFill(false,false),
+  m_userFill(*this, "fill", bvec2(false,false)),
   m_hide(false),
   m_gravity(ewol::gravityButtomLeft),
   m_hasFocus(false),
@@ -509,8 +509,8 @@ bvec2 ewol::Widget::canExpand() {
 }
 
 void ewol::Widget::setFill(const bvec2& _newFill) {
-	if(    m_userFill.x() != _newFill.x()
-	    || m_userFill.y() != _newFill.y()) {
+	if(    m_userFill.get().x() != _newFill.x()
+	    || m_userFill.get().y() != _newFill.y()) {
 		m_userFill = _newFill;
 		requestUpdateSize();
 		markToRedraw();
@@ -518,7 +518,7 @@ void ewol::Widget::setFill(const bvec2& _newFill) {
 }
 
 const bvec2& ewol::Widget::canFill() {
-	return m_userFill;
+	return m_userFill.get();
 }
 
 // ----------------------------------------------------------------------------------------------------------------
@@ -799,7 +799,7 @@ bool ewol::Widget::onGetConfig(const char* _config, std::string& _result) const
 		return true;
 	}
 	if (_config == ewol::Widget::configFill) {
-		_result = m_userFill;
+		_result = m_userFill.get();
 		return true;
 	}
 	if (_config == ewol::Widget::configExpand) {
diff --git a/sources/ewol/widget/Widget.h b/sources/ewol/widget/Widget.h
index f154c692..e2db8c3a 100644
--- a/sources/ewol/widget/Widget.h
+++ b/sources/ewol/widget/Widget.h
@@ -311,7 +311,7 @@ namespace ewol {
 			 */
 			virtual bvec2 canExpand();
 		protected:
-			bvec2 m_userFill;
+			ewol::object::Param<bvec2> m_userFill;
 		public:
 			/**
 			 * @brief set the x&y filling capacity
@@ -323,7 +323,7 @@ namespace ewol {
 			 * @return bvec2 repensent the capacity to x&y filling (set by the user)
 			 */
 			virtual const bvec2& getFill() {
-				return m_userFill;
+				return m_userFill.get();
 			};
 			/**
 			 * @brief get the filling capabilities x&y
diff --git a/sources/lutin_ewol.py b/sources/lutin_ewol.py
index 26771850..d666a718 100755
--- a/sources/lutin_ewol.py
+++ b/sources/lutin_ewol.py
@@ -94,7 +94,11 @@ def create(target):
 		'ewol/object/Message.cpp',
 		'ewol/object/MultiCast.cpp',
 		'ewol/object/Object.cpp',
-		'ewol/object/RemoveEvent.cpp'
+		'ewol/object/RemoveEvent.cpp',
+		'ewol/object/Parameter.cpp',
+		'ewol/object/ParameterList.cpp',
+		'ewol/object/ParamList.cpp',
+		'ewol/object/Param.cpp'
 		])
 	
 	# OpenGL interface :