diff --git a/luaWrapper/luaWrapper.hpp b/luaWrapper/luaWrapper.hpp
index b6e221a..abab96b 100644
--- a/luaWrapper/luaWrapper.hpp
+++ b/luaWrapper/luaWrapper.hpp
@@ -38,6 +38,7 @@
 #include <lua/lauxlib.h>
 #include <ememory/memory.hpp>
 #include <etk/typeInfo.hpp>
+#include <etk/Allocator.hpp>
 
 #define LUAW_POSTCTOR_KEY "__postctor"
 #define LUAW_EXTENDS_KEY "__extends"
@@ -246,7 +247,7 @@ void luaW_push(lua_State* _luaState,
 			lua_pop(_luaState, 1); // ... id cache
 			lua_insert(_luaState, -2); // ... cache id
 			// placement new creation (need to initilaize the sructure:
-			luaW_Userdata* ud = new (lua_newuserdata(_luaState, sizeof(luaW_Userdata))) luaW_Userdata(_obj, ETK_GET_TYPE_ID(LUAW_TYPE)); // ... cache id obj
+			luaW_Userdata* ud = new ((char*)lua_newuserdata(_luaState, sizeof(luaW_Userdata))) luaW_Userdata(_obj, ETK_GET_TYPE_ID(LUAW_TYPE)); // ... cache id obj
 			lua_pushvalue(_luaState, -1); // ... cache id obj obj
 			lua_insert(_luaState, -4); // ... obj cache id obj
 			lua_settable(_luaState, -3); // ... obj cache
diff --git a/sample/sample_1/BankAccount.hpp b/sample/sample_1/BankAccount.hpp
index a5999c3..467de00 100644
--- a/sample/sample_1/BankAccount.hpp
+++ b/sample/sample_1/BankAccount.hpp
@@ -1,5 +1,4 @@
-#ifndef EXAMPLE_HPP_
-#define EXAMPLE_HPP_
+#pragma once
 
 #include <etk/String.hpp>
 #include <iostream>
@@ -19,4 +18,3 @@ class BankAccount {
 		static float s_totalMoneyInBank;
 };
 
-#endif // EXAMPLE_HPP_
diff --git a/sample/sample_1/main.cpp b/sample/sample_1/main.cpp
index ee603a4..abd901c 100644
--- a/sample/sample_1/main.cpp
+++ b/sample/sample_1/main.cpp
@@ -2,21 +2,43 @@
 #include <lua/lua.h>
 #include <lua/lualib.h>
 #include <lua/lauxlib.h>
+#include <test-debug/debug.hpp>
+#include <etk/etk.hpp>
 
 
 #include "LuaBankAccount.hpp"
 
-using namespace std;
+static void usage() {
+	TEST_PRINT("Help:");
+	TEST_PRINT("    ./xxx [OPTIONS] ---");
+	TEST_PRINT("        --file=XXX         File to execute");
+	exit(0);
+}
 
 int main(int _argc, const char *_argv[]) {
-    if (_argc == 2) {
-        lua_State* L = luaL_newstate();
-        luaL_openlibs(L);
-        luaopen_BankAccount(L);
-        if (luaL_dofile(L, _argv[1])) {
-            std::cout << lua_tostring(L, -1) << std::endl;
-        }
-        lua_close(L);
-    }
-    return 0;
+	TEST_PRINT("START SAMPLE 1");
+	etk::init(_argc, _argv);
+	etk::String inputFileName;
+	for (int32_t iii=0; iii<_argc ; ++iii) {
+		etk::String data = _argv[iii];
+		if (    data == "-h"
+		     || data == "--help") {
+			usage();
+		} else if (data.startWith("--file=") == true) {
+			inputFileName = etk::String(&_argv[iii][7]);
+		}
+	}
+	if (inputFileName.empty() == true) {
+		TEST_ERROR("missing file...");
+		usage();
+	}
+	lua_State* L = luaL_newstate();
+	luaL_openlibs(L);
+	luaopen_BankAccount(L);
+	if (luaL_dofile(L, inputFileName.c_str())) {
+		TEST_PRINT(lua_tostring(L, -1));
+	}
+	lua_close(L);
+	TEST_PRINT("END SAMPLE 1");
+	return 0;
 }
diff --git a/sample/sample_2/Example.hpp b/sample/sample_2/Example.hpp
index 8fd0178..3386bcb 100644
--- a/sample/sample_2/Example.hpp
+++ b/sample/sample_2/Example.hpp
@@ -1,5 +1,4 @@
-#ifndef EXAMPLE_HPP_
-#define EXAMPLE_HPP_
+#pragma once
 
 #include <etk/String.hpp>
 
@@ -57,4 +56,3 @@ class Example {
 		int DoSomethingElse(float _f);
 };
 
-#endif
\ No newline at end of file
diff --git a/sample/sample_2/LuaCustomTypes.hpp b/sample/sample_2/LuaCustomTypes.hpp
index 32b0a07..fce5af4 100644
--- a/sample/sample_2/LuaCustomTypes.hpp
+++ b/sample/sample_2/LuaCustomTypes.hpp
@@ -1,5 +1,4 @@
-#ifndef LUA_CUSTOM_TYPES_H__
-#define LUA_CUSTOM_TYPES_H__
+#pragma once
 
 #include <etk/String.hpp>
 
@@ -57,4 +56,3 @@ template<> struct luaU_Impl<Vector2D> {
     }
 };
 
-#endif
\ No newline at end of file
diff --git a/sample/sample_2/LuaExample.hpp b/sample/sample_2/LuaExample.hpp
index 732f640..716ad6f 100644
--- a/sample/sample_2/LuaExample.hpp
+++ b/sample/sample_2/LuaExample.hpp
@@ -1,7 +1,5 @@
-#ifndef LUAEXAMPLE_HPP_
-#define LUAEXAMPLE_HPP_
+#pragma once
 
 struct lua_State;
 int luaopen_Example(lua_State* _L);
 
-#endif
diff --git a/sample/sample_2/Vector2D.hpp b/sample/sample_2/Vector2D.hpp
index 53ee6b2..5fac5a1 100644
--- a/sample/sample_2/Vector2D.hpp
+++ b/sample/sample_2/Vector2D.hpp
@@ -1,5 +1,4 @@
-#ifndef VECTOR2D_H_
-#define VECTOR2D_H_
+#pragma once
 
 struct Vector2D {
 	Vector2D(float x_ = 0.f, float y_ = 0.f) :
@@ -11,4 +10,3 @@ struct Vector2D {
 	float y;
 };
 
-#endif
\ No newline at end of file
diff --git a/sample/sample_2/main.cpp b/sample/sample_2/main.cpp
index e388055..d252cea 100644
--- a/sample/sample_2/main.cpp
+++ b/sample/sample_2/main.cpp
@@ -3,18 +3,41 @@
 #include <lua/lua.h>
 #include <lua/lualib.h>
 #include <lua/lauxlib.h>
+#include <test-debug/debug.hpp>
+#include <etk/etk.hpp>
 
 #include "LuaExample.hpp"
 
-int main(int argc, const char *argv[]) {
-    if (argc == 2) {
-        lua_State* L = luaL_newstate();
-        luaL_openlibs(L);
-        luaopen_Example(L);
-        if (luaL_dofile(L, argv[1])) {
-            std::cout << lua_tostring(L, -1) << std::endl;
-        }
-        lua_close(L);
-    }
-    return 0;
+static void usage() {
+	TEST_PRINT("Help:");
+	TEST_PRINT("    ./xxx [OPTIONS] ---");
+	TEST_PRINT("        --file=XXX         File to execute");
+	exit(0);
+}
+
+int main(int _argc, const char *_argv[]) {
+	TEST_PRINT("START SAMPLE 1");
+	etk::init(_argc, _argv);
+	etk::String inputFileName;
+	for (int32_t iii=0; iii<_argc ; ++iii) {
+		etk::String data = _argv[iii];
+		if (    data == "-h"
+		     || data == "--help") {
+			usage();
+		} else if (data.startWith("--file=") == true) {
+			inputFileName = etk::String(&_argv[iii][7]);
+		}
+	}
+	if (inputFileName.empty() == true) {
+		TEST_ERROR("missing file...");
+		usage();
+	}
+	lua_State* L = luaL_newstate();
+	luaL_openlibs(L);
+	luaopen_Example(L);
+	if (luaL_dofile(L, inputFileName.c_str())) {
+		TEST_PRINT(lua_tostring(L, -1));
+	}
+	lua_close(L);
+	return 0;
 }