Action: wu_transition_payment_refund_total

Fires when the refund total of a payment transitions from one value to another.

This hook is fired by BerlinDB when a database UPDATE changes the refund_total column for a payment row.

Parameters

Name	Type	Description
$old_value	`string`	The previous refund total value.
$new_value	`string`	The new refund total value.
$item_id	`int`	The payment ID.