Hi Bruno, Nice to see jBPM is used in Brazil. Maybe your problem is already solved, but from what I can see it is due to the fact that you are combining an assignment handler (br.unb.cic.identity.assignment.INSSExpressionAssignmentHandler) with an assignment expression in your swimlane assignment. What is the handler exactly doing? Regards, Koen View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3998506#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...