Added Direct Debit Amount to easily identify excess charges

modules/service/classes/Model/Service/Billing.php

@@ -16,5 +16,11 @@ class Model_Service_Billing extends ORM_OSB {
 	protected $_has_one = array(
 		'checkout'=>array('far_key'=>'checkout_id','foreign_key'=>'id'),
 	);
+
+	protected $_display_filters = array(
+		'checkout_amount'=>array(
+			array('Currency::display',array(':value')),
+		),
+	);
 }
 ?>