I have a web form where the user has a choice of selecting either Credit Card U.S. or Credit Card International. The problem with the code is that the field "Convenience fee (2.3% for CC)" is not being updated with the correct amount when the user selects Credit Card - U.S. In other words, it still shows a "0". However it works with Credit Card - International where the correct amount is shown (please refer to attached screen shots). I am not sure what is causing the error. I have also attached the code. I would appreciate your help.