Hi, reading the snippet again, which Salaboy21 posted in an earlier post, I must confess to having difficulty grasping the difference between signalling and blocking tasks... | Task instances can be signalling. A signalling task instance is a task instance that, when completed, can send a signal to its token to continue the process execution. Task instances can be blocking, meaning that the related token (=path of execution) is not allowed to leave the task-node before the task instance is completed. By default task instances are signalling and non-blocking. | It looks like both types of task halt execution until task completion... can anyone explain this with a simple real work example ? Thanks very much for your help, regards, Ross View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4186327#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...