[Lazarus] need suggestion about ParamStrUTF8(0)

[FreeMan]

osx yosemite fpc, lazarus svn qt x64
ParamStrUTF8(0) in /lazarus/components/lazutils/fileutil.pas
this function result in osx : ......./myproject.app/Contents/MacOS/myproject
showing normal, but its symbolink link, not application. Why I need real 
application path, I need create some folder and create ini files in 
application's same folder.
In osx myproject.app is a folder, and finder show it like a application, 
so end user not find and access to that created folder and ini files. I 
need real application path. How to do this?
thank you.