SambaCard Add Funds instead of Change

I have a standard SambaCard setup (called Member Card) in the screenshot below. In the scenario that the customer gives me £10, the items costs £2.45 when I press “Member Card” could the remaining £7.55 be added to the Member Card account?

This doesn’t appear to work correctly. It prompts to give 7.55 change, then charges the 2.45 to the Member Card account. Is this something I have setup incorrectly?

The Member Card account type has the rules option set to “Credit” if this makes any difference.

This is similar, using a Payment Processor called Add Calculation with Use Change Amount checked. In your case, you would set up a transaction to have the Change amount go to the Member Card. Your transaction may require that the Change amount be negated (Amount*-1).