you cannot have an assignment in it.... just leave it empty and set the actor id with the api on the jbpm context when starting a process View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4180440#4180440 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4180440