I guess I was a bit unclear. Instead of adding several attributes to the task element which would also need to be added to the class definition one could have one member-variable holding a set of Objects representing the additional attributes. So there would be no need to extend oder change something. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4259233#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...