How to access scriptData from uploadify in asp.net MVC controller?

Found an answer working through it on my own, by accepting a formcollection in my controller action i can access the categoryID parameter from the uploadify script.

EDIT for some code:

 [AcceptVerbs(HttpVerbs.Post)]
 public string FileSave(long id, HttpPostedFileBase FileData, FormCollection forms)
 {
     long catID = Int64.Parse(forms.Get("CategoryID"));

     //do something with files

     return "Upload Successful";
 }