Get filename from Watched folder start point

I have a watched folder as a start point and I can use the

symbols %F and %E in order to save the output documents in the Result folder.

This is easy.

What I cannot do, is getting in a string variable the same filename in order to use it within the Process:

Is it possible?

I would like to exploit this filename to discriminate the activities that the file have to make...

Thanks you as usual!