I have a form which has a section to choose a door number, each numeral is charged at £2.00. I have a script that calculates the amount of digits and that value is placed in a textfield.
I also have another textfeild that shows the total value of the order, but the problem is that the total value won't update when the amount of digits changes. If you click in the field with the amount of digits and press enter it updates the total value.
This was just a way round it I could think of.