How to capture Promo Code number 200 in dataset and subtract that from another field to have the end result appear on the output Payment?

adelinetan · June 7, 2021, 2:18am

hi, i have difficult subtracting two numbers from form text entry A example 200 promo code to deduct from dataset stored entry B 3200, to return value C =3000.
For example:
Promo code to enter on screen: $200 (enter into dataset)
End Result appear on Screen: $3,200 - $200 = $3,000 (stored in dataset and appear on screen)

Can somebody please show me how to use WIX coding for text, dataset and returned value in label on screen?

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How to capture Promo Code number 200 in dataset and subtract that from another field to have the end result appear on the output Payment?

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