Credit Card Refund Checkbox Workflow

I am trying to create a workflow that automatically unchecks the checkbox on Cash Refunds for "Process Credit Card" and "Process Paypal Payment", so that by default, when a user opens up a credit card or Paypal refund, the checkbox is blank (I contacted Netsuite support and they told me that there was no way to change the default behavior of this box outside of scripting/workflows). 

I was able to get this to work just fine for Paypal, because the "Process Paypal Payment" checkbox is exposed in the Parameters fields in the Workflow manager, and so it is very easy to create a workflow that just basically looks to see if that that box is checked, and to uncheck it on creation of the refund.  However, I can't find any equivalent in the Workflow Manager for the "Process Credit Cards" checkbox that appears on credit card refunds.  Am I just missing this field somehow (maybe it is named strangely?) or does anybody else have any ideas