"kukeltje" wrote : afaik, jBPM4 has no notion of transient variables. otoh, if you do not use anything async, you could use 'thread local' stuff. Actually I'm using a ThreadLocal now, thank you for your suggestion. Indeed I think transient variable is useful and necessary for jbpm, I just wonder if there's any similar sulotions controled by jbpm, not by programmer View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4253457#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...