Many thanks, Chris! Last question to clarify: Inside the processA, you can define a node whicn contains an action with an actionhandler that would send a message. I understand this. HOWEVER, in order to invoke processB, you need to use a MDB to pick up the message. What is MDB? Is it something you have to define outside of processB? Can you define something like a listener inside processB which will wait for the message and kick processB to start? Basically what I want is a very clean GUI design of JBPM process defintion without any outside coding. Is it possible? Hope I don't confuse you. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4147978#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...