I suspect I am setting up something incorrectly here - because I am still having some issues.
1. I just add the recordset to the "passCode" field from bindings
2. I select the "Insert Record (user)" server behavior and I change the trigger to "Recordset: passCodes is not empty"
3. when I test it it no longer shows the registration page at all it instantly bounces to the "Go to" page.
Thanks for you time.