In TaskMgmtInstance there is a api: public void removeSignalling(Token token){ if (taskInstances!=null) { Iterator iter = taskInstances.iterator(); while (iter.hasNext()) { TaskInstance taskInstance = (TaskInstance) iter.next(); taskInstance.setSignalling(false); } } } and it has a note:removes signalling capabilities from all task instances related to the given token. but obviously it set all task instances' signalling of taskMgmtInstances to false. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3995993#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...