Get Path for Active PDF via VBA

Dear all, 

I use VBA and Adobe Acrobat 10.0 Type Libary to work with PDFs.

So far it works well. However, I try to read out the path, where the PDF is stored.  I can find that information in the  register file<description<advanced properties. However I have no idea how i can read out the information via VBA. I tried AcroPDDoc.GeInfo(). However, that seems not to be the correct approach as I read in another forum. Unfortnuately, no solution was provided in the other forum. Can maybe some help out?

Thank you,

Best regards Anian