CRM document library

Need some assistance with the library file...

I am working on a screen in which I want to pass the library path and file name to an external program when a button is pressed on the screen. One thing I am noticing is that the library path does not appear in the fields to add to the screen. I specifically made it part of a view and I am using the view for the screen. However, it does not appear as a field selection. I am wondering why it does not appear.

Any assistance that could be provided would be greatly appreciated.

Thanks!