I have a forms process that is triggered by Workflow, sending a link to the form to a group of users.  Each user can now fill out their copy of the form, which has been pre-filled with their information by Workflow.  After completing the form, I want the user to be redirected to a Thank You page, but it's not an option in a regular task...it seems it's only an option from a Message Start event.  Is there any other way to redirect to the Thank You page after a task is completed?