Creating the installer for air

Hi Guys this may be another dumb question but I just can;t find the info.
when I run my test app it dow create a folder ‘Test’ in my documents as expected but I need to put files in that folder. The problem is that if I attach my projects ;Test’ folder it gets placed in the application dir which is not what I need. Can anyone help on this as it seems to be hard to find documentation.
Best
F