You should use the server file name binding that is in the uploaded files are of the bindings. If this is not available to you on your template file, blank, then you will need to open the page with the form on it and drag and drop these bindings onto the page to get them. Once you have done that you can cut and paste these binding values into the block template where you would like to see them. 
I have been trying to accomplish this but the upload hangs and never gets to my thank-you page, so obviously I am doing something wrong. Would anyone be able to give me example code on how to do this?
Can I also suggest that this functionality be added to the extension in a future update, since it seems to be such a fundamental thing to want in a form submission, to know the filename of the file that was uploaded, and to easily be able to return the content of any field that is added on the form. It's difficult on a busy site to know who uploaded which file, particularly when you get 3 or 4 "archive.zip" files in a row.


