how to use CreateFileMapping in SWFKit pro

[fxtfxt2008]

hello SWFKit!
help me!

dllimport "kernel32.dll" stdcall long CreateFileA(String,long,long,pointer,long,long,long) as creatfile;
dllimport "kernel32.dll" stdcall long CreateFileMappingA(long,long,long,long,long,String) as CFMap
var filename=getExeName().split("\\").join("\\\\")
filhandle=creatfile(filename, 0x80000000/*GENERIC_READ*/, 
     0x00000001/*FILE_SHARE_READ*/, null, 3/*OPEN_EXISTING*/, 
     0x00000080/*FILE_ATTRIBUTE_NORMAL*/, 0)
   trace(filhandle)     
//why can not the code bellow normal execution?
trace(CFMap(filhandle,0,0x8000000 /*SEC_COMMIT*/,0,0,"mapping"))//out put 0

[SWFKit]

Why do you want to do that? On the running exe file?