--- a/plcopen/pou_block_instances.ysl2	Wed Oct 02 01:21:35 2013 +0200
+++ b/plcopen/pou_block_instances.ysl2	Wed Oct 02 17:23:44 2013 +0200
@@ -339,8 +339,14 @@
                 otherwise > 
             }
         }
+        variable "qualifier" {
+            choose {
+                when "@qualifier" > «@qualifier»
+                otherwise > N
+            }
+        }
         variable "actionBlock_action" {
-            > «ns:AddAction(@qualifier, $type, $value, @duration, @indicator)»
+            > «ns:AddAction($qualifier, $type, $value, @duration, @indicator)»
         }
     }