I just want to add a piece of script to customerize my fork. It need get value from a process varible a. If a==true, the fork goes to three transitions, otherwise, just goes to two transitions. I am trying to using expression in transition. a it throws exceptions. Has anybody a small piece of example script? Thanks in advance! View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3962007#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...