I am working on the Creating Wizards with Visual Workflow challenge, and I have run into an unhandled exception. My workflow is running fine when just creating an Account record. It worked when creating and Account record and a Contact record with just first and last name. The problem popped up when I created a variable for the AccountID to link the Contact record back to the Account record. Here's what I have:







I have a feeling the error has something to do with the variable I created, but I can't figure out what to do. I tried other data types, but that didn't seem to work.