Parcel Service Fileshare Folder Path

Hello - 

I'm using Parcel Service to generate/ship a Book. The book is an Excel export file of a Cube View. Very simple.

I can get the Excel file to email properly through Parcel Service. But, I also want to save a copy of the Excel file in the OneStream file system. Does anyone know the syntax for the OS file share path? I've tried everything I can think of.

Thanks,
Bil