Action: wu_transition_discount_code_setup_fee_value

Fires when the setup fee value of a discount code transitions from one value to another.

This hook is fired by BerlinDB when a database UPDATE changes the setup_fee_value column for a discount code row.

Parameters

Name	Type	Description
$old_value	`string`	The previous setup fee value value.
$new_value	`string`	The new setup fee value value.
$item_id	`int`	The discount code ID.