QF_Controller dynamic list?

Hello! I'm trying to figure out how to dynamically list elements on a form as the user himself adds item to from the form. I have a file-element in my form where the user should be able to upload a file one at a time. Each uploaded file(name/type/size etc) sould be added to a list in the form dynamically. I'm not sure how to do this yet. Is there anyone who have done something similar or have an idea or tip? Regards, Markus Bagge