Credit Card Tip

[Marian]

I found this:

http://forum.sambapos.com/t/credit-card-tips-overpayment-ask-question-cancel-payment/5525/3

and

[New 4.1.52] Add Calculation Payment Processor Validation

While reviewing @Jesse’s database I’ve noticed in some cases default validation question may lead unwanted confirmations. [image] Instead of using just Yes or No we may ask better questions. So I’ve added two settings for better questions. [image] $0 replaces with calculation amount and this configuration displays… [image] First selection will always validate calculation. (means OK). If you configure buttons like we do for Ask Question action the button equals OK value validates calc…

But I don’t know how (from emre’s tutorial from where he get’s the amount 0, )…thanks