args is a dictionary with the following keys:

  • view - The ActionTag form view
  • baseAmount - Base contribution amount, before Cover Costs are applied
  • totalAmount - Total contribution amount, after Cover Costs are applied
  • coverCost - Cover Costs amount that is being applied to the base contribution amount
  • coverCostEnabled - boolean, true if cover costs checkbox is checked

This callback is called when the contribution amount for the form is changed.