thanks a lot . I changed jbpm4.0 to 4.2 and its works well. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4265449#4265449 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=4265449