"Bernd" wrote : Yes, but the compatible answer to these questions is WS-HumanTask. AFAICS the only lines in the spec wrt execution semantics of user tasks is the following: anonymous wrote : User Task: Upon instantiation, theUser Task is distributed to the assigned person or group of | people. When the work has been done, theUser Task completes. | So the actual implementation of assignment is up to the implementor. This implementation has to look up the assignee or candidate based on the actual parameters that are available. I could be wrong but I think it means that this will probably not be very portable across implementations. Cheers, koen View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4248427#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...