I've donwloaded the trial version and everything works like a charm, upoloading multiple files nice n easy, getting the minetype and inserting the file into SQL Server. Perfect!

 

However, I need to pass a variable together with the files (projectID) and insert this variable into the table as well.  I'm not too used with working with asp.net controls, and I just tried to add a input type hidden field to the page but that did not pass my project ID.

 

I'm sure this is quite easy, sorry for not finding the solution myself.