Using Dropbox plugin, I need each form to save files to its own Dropbox folder

I'm using the Blue Liquid Dropbox - Gravity plugin, and I need each form to save files to its own Dropbox folder.

Is there any workaround for this?

I want to Form A to save its uploaded files in Dropbox Folder A
and
Form B to save its uploaded files in Dropbox Folder B

OR
Is there a way for each form to append it's own arbitrary text to the head of the filename of each file uploaded?

Thanks!