Index: /mods/mod_gutschein/wpsg_voucher.php
===================================================================
--- /mods/mod_gutschein/wpsg_voucher.php	(revision 7960)
+++ /mods/mod_gutschein/wpsg_voucher.php	(revision 7961)
@@ -69,11 +69,13 @@
 			if ($taxView === WPSG_NETTO) {
 				
-				return abs(wpsg_tf($this->db->fetchOne("SELECT SUM(`sum_netto`) FROM `".WPSG_TBL_ORDER_VOUCHER."` WHERE `voucher_id` = '".wpsg_q($this->getId())."' ".$strQueryWHERE)));
+				$r = abs(wpsg_tf($this->db->fetchOne("SELECT SUM(`sum_netto`) FROM `".WPSG_TBL_ORDER_VOUCHER."` WHERE `voucher_id` = '".wpsg_q($this->getId())."' ".$strQueryWHERE)));
 				
 			} else if ($taxView === WPSG_BRUTTO) {
 				
-				return abs(wpsg_tf($this->db->fetchOne("SELECT SUM(`sum_brutto`) FROM `".WPSG_TBL_ORDER_VOUCHER."` WHERE `voucher_id` = '".wpsg_q($this->getId())."' ".$strQueryWHERE)));
+				$r = abs(wpsg_tf($this->db->fetchOne("SELECT SUM(`sum_brutto`) FROM `".WPSG_TBL_ORDER_VOUCHER."` WHERE `voucher_id` = '".wpsg_q($this->getId())."' ".$strQueryWHERE)));
 				
 			} else throw new \Exception(__('Nicht definiert.', 'wpsg'));
+			
+			$r = \apply_filters('wpsg_voucher_getUsedAmount', $r, $taxView);
 			
 		}