Multiple credit card surcharges

Hi there,

We are using EWAY gravity forms and had a complication with the credit card surcharges. Currently, we have one ‘Product’ field that is uses a calculation formula which takes the invoice total (another ‘product’ field) and multiplies it by a percentage to display the surcharge that will be charged in addition.

The issue is that we need to have different surcharges depending on the card the customer chooses. If we add multiple ‘product’ fields for each card surcharge, the total charge which displays at the end of the form will not reflect the correct amount as it will add all surcharge fields together.

How would we go about this?

Thank you and Regards