use macro token in pragma result in incorrect substitution - c++

Question

I'm trying to use macro with "pragma include_alias" in VS2010, but I got a odd compiling warning which means the substitution is incorrect.
Here is the code:
18 #define RAPID_INCLUDES_PATH(MY_TARGET_HEADERS) "C:\\thirdpart\\rapidxml-1.13\\" ## #MY_TARGET_HEADERS
19 #define TEST(empty) "C:\\thirdpart\\rapidxml-1.13\\rapidxml_print.hpp"
//WORKS
21 #pragma include_alias( "rapidxml.hpp", "C:\\thirdpart\\rapidxml-1.13\\rapidxml.hpp" )
22 #pragma include_alias( "rapidxml_print.hpp" , TEST(empty) )
//FAILS
23 #pragma include_alias( "rapidxml_utils.hpp" , RAPID_INCLUDES_PATH(rapidxml_utils.hpp) )
24 #pragma include_alias( "rapidxml_iterators.hpp" , RAPID_INCLUDES_PATH(rapidxml_iterators.hpp) )
26 #include "rapidxml.hpp"
27 #include "rapidxml_iterators.hpp"
28 #include "rapidxml_print.hpp"
29 #include "rapidxml_utils.hpp"
The error messages:
1> Touching "Debug\xml2.unsuccessfulbuild".
1>ClCompile:
1> stdafx.cpp
1>d:\workspace\v10\xml2\xml2\stdafx.h(23): warning C4081: expected ')'; found 'string'
1>d:\workspace\v10\xml2\xml2\stdafx.h(24): warning C4081: expected ')'; found 'string'
1>d:\workspace\v10\xml2\xml2\stdafx.h(27): fatal error C1083: Cannot open include file: 'rapidxml_iterators.hpp': No such file or directory
1>
1>Build FAILED.
1>
It seems there're some misuses of macro.
Anyone knows how to fix it? Thanks a lots.