At long last I think to remove the framework plug-in.
Too bad, it was a good idea to validate the voucher code in real time.
But it's a bit difficult to tweak the code (for me) to make it work along with the progress bar.
Your example is working but it will allow the form to submit only if the voucher code is validated. I need to submit the form even if the voucher don't pass the validation (I will apply server validation (as usual) to this field (using a recordset that will verify the voucher code).
Is there a simpler alternative that will check a form field in real time using a recordset?