thanks a lot,kukeltje! I search many jbpm apis,but i can't find apis i need! maybe i am not careful enough. would you please give me some api examples ? what's more,i also thought i could use a token instance to rollback the process,but i can not find any "turn back" method from token instance. looking forward to your help! i repeat,this is urgent! View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4072266#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...