of course that is blocking until the process reach a wait state.. that is what i'm saying.. I don't understand why hkapoor(a)ciber.com say that is not blocking. So is blocking for nature.. i you use a wait state is because that you want to stop this blocking behavior and let someone else interact with the process. I think if hkapoor(a)ciber.com understand the concept he should review his question... he also mention "workflow is ended or stopped", so i understand that he think that always the process interaction is not blocking View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4210887#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...