Maybe there is another field name that works with that system that allows you to set the redirect page? I'd ask the people that gave you the field names to use if there is a field name you can add to set a page to display on completion.
Your friends over here at WebAssist! These Dreamweaver extensions will assist you in building unlimited, custom websites.
These out-of-the-box solutions provide you proven, tested applications that can be up and running now. Build a store, a gallery, or a web-based email solution.