Working on a POS System and wondering how the calculation on amount due can auto enter into whatever choice of payment is selected. ex. User clicks on Amex and amount due auto loads. 

Can you use the script trigger on the field, “OnObjectEnter” to run a script that calculated the value and puts it into the fields. You will have to pass the field name via a script ion parameter (get active field will come in handy here) 

Working on a POS System and wondering how the calculation on amount due can auto enter into whatever choice of payment is selected. ex. User clicks on Amex and amount due auto loads. 

 

It sounds like you have multiple amount fields. Which is probably not a good idea. When user clicks on the Amex button (not field), it should enter "Amex" into a PaymentMethod field (using the Set Field script step).