diff --git a/.travis.yml b/.travis.yml
index f5c2cec4..c52e8ecc 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,5 +1,7 @@
 # language type:
-language: cpp
+language:
+- cpp
+- Objective-c
 
 # compilator system:
 compiler:
@@ -27,16 +29,16 @@ install:
 
 # build sequence with Lutin :
 script: 
-  - if [ "$CXX" == "clang++" ]; then ./build/lutin.py -C -P -cclang -mdebug -p ewol etktest exmltest ejsontest enettest; fi
-  - if [ "$CXX" == "g++" ]; then ./build/lutin.py -C -P -cgcc -mdebug -p ewol etktest exmltest ejsontest enettest; fi
+  - if [ "$CXX" == "clang++" ]; then ./build/lutin.py -C -P -cclang -mdebug -p ewol etk_test exmltest ejson_test enettest; fi
+  - if [ "$CXX" == "g++" ]; then ./build/lutin.py -C -P -cgcc -mdebug -p ewol etk_test exmltest ejson_test enettest; fi
 
 after_script:
-  - if [ "$CXX" == "clang++" ]; then ./out/Linux_x86_64/debug/staging/clang/etktest/usr/bin/etktest; fi
+  - if [ "$CXX" == "clang++" ]; then ./out/Linux_x86_64/debug/staging/clang/etktest/usr/bin/etk_test; fi
   - if [ "$CXX" == "clang++" ]; then ./out/Linux_x86_64/debug/staging/clang/exmltest/usr/bin/exmltest; fi
-  - if [ "$CXX" == "clang++" ]; then ./out/Linux_x86_64/debug/staging/clang/ejsontest/usr/bin/ejsontest; fi
-  - if [ "$CXX" == "g++" ]; then ./out/Linux_x86_64/debug/staging/gcc/etktest/usr/bin/etktest; fi
+  - if [ "$CXX" == "clang++" ]; then ./out/Linux_x86_64/debug/staging/clang/ejsontest/usr/bin/ejson_test; fi
+  - if [ "$CXX" == "g++" ]; then ./out/Linux_x86_64/debug/staging/gcc/etktest/usr/bin/etk_test; fi
   - if [ "$CXX" == "g++" ]; then ./out/Linux_x86_64/debug/staging/gcc/exmltest/usr/bin/exmltest; fi
-  - if [ "$CXX" == "g++" ]; then ./out/Linux_x86_64/debug/staging/gcc/ejsontest/usr/bin/ejsontest; fi
+  - if [ "$CXX" == "g++" ]; then ./out/Linux_x86_64/debug/staging/gcc/ejsontest/usr/bin/ejson_test; fi
 
 #send e-mail on compilation result:
 notifications:
diff --git a/external/eaudiofx b/external/eaudiofx
index 79042c57..5b858de8 160000
--- a/external/eaudiofx
+++ b/external/eaudiofx
@@ -1 +1 @@
-Subproject commit 79042c57e5f3306f1dcd576d47f7890e39769faf
+Subproject commit 5b858de808d471ac09d8fae20f6abc7d3acbe671
diff --git a/external/ejson b/external/ejson
index bcab8b07..b3b7d90b 160000
--- a/external/ejson
+++ b/external/ejson
@@ -1 +1 @@
-Subproject commit bcab8b07067cc15a81e14234d302dc945b5b2471
+Subproject commit b3b7d90b418241bf05b32df14c9262d8a3f1ccf4
diff --git a/external/etk b/external/etk
index cc807465..b00b7aa7 160000
--- a/external/etk
+++ b/external/etk
@@ -1 +1 @@
-Subproject commit cc807465f88a272d6e61a3c41c5f4e7277c5ee2f
+Subproject commit b00b7aa7b37eb7baf4eda50ad447b3ee1d6fe94f
diff --git a/sources/ewol/resource/ColorFile.cpp b/sources/ewol/resource/ColorFile.cpp
index 6ac817c2..750b8450 100644
--- a/sources/ewol/resource/ColorFile.cpp
+++ b/sources/ewol/resource/ColorFile.cpp
@@ -47,13 +47,13 @@ void ewol::resource::ColorFile::reload() {
 		EWOL_ERROR("Can not load file : '" << m_name << "' = " << etk::FSNode(m_name).getFileSystemName());
 		return;
 	}
-	ejson::Array* baseArray = doc.getArray("color");
+	std::shared_ptr<ejson::Array> baseArray = doc.getArray("color");
 	if (baseArray == nullptr) {
 		EWOL_ERROR("Can not get basic array : 'color'");
 		return;
 	}
 	for (size_t iii = 0; iii < baseArray->size(); ++iii) {
-		ejson::Object* tmpObj = baseArray->getObject(iii);
+		std::shared_ptr<ejson::Object> tmpObj = baseArray->getObject(iii);
 		if (tmpObj == nullptr) {
 			EWOL_DEBUG(" can not get object in 'color' id=" << iii);
 			continue;
diff --git a/sources/ewol/resource/ConfigFile.cpp b/sources/ewol/resource/ConfigFile.cpp
index 1593a43f..fdf32f2c 100644
--- a/sources/ewol/resource/ConfigFile.cpp
+++ b/sources/ewol/resource/ConfigFile.cpp
@@ -16,7 +16,7 @@
 #include <stdexcept>
 
 #undef __class__
-#define __class__	"resource::ConfigFile"
+#define __class__ "resource::ConfigFile"
 
 
 ewol::resource::ConfigFile::ConfigFile() :
@@ -32,13 +32,6 @@ void ewol::resource::ConfigFile::init(const std::string& _filename) {
 
 
 ewol::resource::ConfigFile::~ConfigFile() {
-	// remove all element
-	for (int32_t iii=0; iii<m_list.size(); iii++){
-		if (nullptr != m_list[iii]) {
-			delete(m_list[iii]);
-			m_list[iii] = nullptr;
-		}
-	}
 	m_list.clear();
 }
 
@@ -76,7 +69,7 @@ double ewol::resource::ConfigFile::getNumber(int32_t _id) {
 	     || m_list[_id] == nullptr) {
 		return 0.0;
 	}
-	ejson::Number* tmp = m_list[_id]->toNumber();
+	std::shared_ptr<ejson::Number> tmp = m_list[_id]->toNumber();
 	if (tmp == nullptr) {
 		return 0.0;
 	}
@@ -89,7 +82,7 @@ const std::string& ewol::resource::ConfigFile::getString(int32_t _id) {
 	     || m_list[_id] == nullptr) {
 		return errorString;
 	}
-	ejson::String* tmp = m_list[_id]->toString();
+	std::shared_ptr<ejson::String> tmp = m_list[_id]->toString();
 	if (tmp == nullptr) {
 		return errorString;
 	}
@@ -101,7 +94,7 @@ bool ewol::resource::ConfigFile::getBoolean(int32_t _id) {
 	     || m_list[_id] == nullptr) {
 		return false;
 	}
-	ejson::Boolean* tmp = m_list[_id]->toBoolean();
+	std::shared_ptr<ejson::Boolean> tmp = m_list[_id]->toBoolean();
 	if (tmp == nullptr) {
 		return false;
 	}
diff --git a/sources/ewol/resource/ConfigFile.h b/sources/ewol/resource/ConfigFile.h
index 1ae206b8..a0bcb048 100644
--- a/sources/ewol/resource/ConfigFile.h
+++ b/sources/ewol/resource/ConfigFile.h
@@ -20,7 +20,7 @@ namespace ewol {
 		class ConfigFile : public ewol::Resource {
 			private:
 				ejson::Document m_doc;
-				etk::Hash<ejson::Value*> m_list;
+				etk::Hash<std::shared_ptr<ejson::Value>> m_list;
 			protected:
 				ConfigFile();
 				void init(const std::string& _filename);
diff --git a/sources/ewol/resource/DistanceFieldFont.cpp b/sources/ewol/resource/DistanceFieldFont.cpp
index 66914be4..5cae8478 100644
--- a/sources/ewol/resource/DistanceFieldFont.cpp
+++ b/sources/ewol/resource/DistanceFieldFont.cpp
@@ -342,13 +342,13 @@ ewol::GlyphProperty* ewol::resource::DistanceFieldFont::getGlyphPointer(const ch
 void ewol::resource::DistanceFieldFont::exportOnFile() {
 	EWOL_DEBUG("EXPORT: DistanceFieldFont : file : '" << m_fileName << ".json'");
 	ejson::Document doc;
-	ejson::Array* tmpList = new ejson::Array();
+	std::shared_ptr<ejson::Array> tmpList = ejson::Array::create();
 	if (tmpList == nullptr) {
 		EWOL_ERROR("nullptr pointer");
 		return;
 	}
 	for (size_t iii=0; iii<m_listElement.size(); ++iii) {
-		ejson::Object* tmpObj = new ejson::Object();
+		std::shared_ptr<ejson::Object> tmpObj = ejson::Object::create();
 		if (tmpObj == nullptr) {
 			continue;
 		}
@@ -391,14 +391,14 @@ bool ewol::resource::DistanceFieldFont::importFromFile() {
 	m_lastRawHeigh = doc.getNumberValue("m_lastRawHeigh", 0);
 	m_borderSize = doc.getNumberValue("m_borderSize", 2);
 	m_textureBorderSize = doc.addString("m_textureBorderSize", "0,0");
-	ejson::Array* tmpList = doc.getArray("m_listElement");
+	std::shared_ptr<ejson::Array> tmpList = doc.getArray("m_listElement");
 	if (tmpList == nullptr) {
 		EWOL_ERROR("nullptr pointer array");
 		return false;
 	}
 	m_listElement.clear();
 	for (size_t iii=0; iii<tmpList->size(); ++iii) {
-		ejson::Object* tmpObj = tmpList->getObject(iii);
+		std::shared_ptr<ejson::Object> tmpObj = tmpList->getObject(iii);
 		if (tmpObj == nullptr) {
 			continue;
 		}