Hi, I meet a problem, anyone could help me? I want to add a DecisionNode in my process definition, this is the first sample: <start-state name="start"> | <task name="NewApply" swimlane="proposer"></task> | <transition name="" to="DepLeader"></transition> | </start-state> | <task-node name="DepLeaderApprove"> | <task name="DepLeaderUpdte" swimlane="depleader"></task> | <transition name="" to="NeedUnitLeader"></transition> | </task-node> | <decision name="NeedUnitLeader"> | <handler class="com.test.action.NeedUnitleaderApproveHandler"> | </handler> | <transition name="ToUnitLeader" to="UnitLeaderApprove"></transition> | <transition name="ToUser" to="UserConfirm"></transition> | </decision> | <task-node name="UnitLeaderApprove"> | <task name="UnitLeaderUpdte" swimlane="unitleader"></task> | <transition name="" to="UserConfirm"></transition> | </task-node> | ... It is OK. But I want to add a task node after the DepLeaderApprove node to realize the return to sender function. This is the second sample: <start-state name="start"> | <task name="NewApply" swimlane="proposer"></task> | <transition name="" to="DepLeader"></transition> | </start-state> | <task-node name="DepLeaderApprove"> | <task name="DepLeaderUpdte" swimlane="depleader"></task> | <transition name="" to="NeedUnitLeader"></transition> | </task-node> | <task-node name="Modify"> | <task name="ModifyApply" swimlane="proposer"></task> | <transition name="" to="DepLeaderApprove"></transition> | </task-node> | <decision name="NeedUnitLeader"> | <handler class="com.test.action.NeedUnitleaderApproveHandler"> | </handler> | <transition name="ToUnitLeader" to="UnitLeaderApprove"></transition> | <transition name="ToUser" to="UserConfirm"></transition> | </decision> | <task-node name="UnitLeaderApprove"> | <task name="UnitLeaderUpdte" swimlane="unitleader"></task> | <transition name="" to="UserConfirm"></transition> | </task-node> | ... After I deploy this, when the DepLeader open the instance from home page on Node'DepLeaderApprove', an exception throw like this: type Exception report | | message | | description The server encountered an internal error () that prevented it from fulfilling this request. | | exception | | javax.servlet.ServletException: Error calling action method of component with id _id1_5:_id4 | javax.faces.webapp.FacesServlet.service(FacesServlet.java:109) | org.jbpm.webapp.filter.AuthenticationFilter.doFilter(AuthenticationFilter.java:55) | org.jbpm.web.JbpmContextFilter.doFilter(JbpmContextFilter.java:83) | org.jbpm.webapp.filter.LogFilter.doFilter(LogFilter.java:59) | org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:81) | | | root cause | | javax.faces.FacesException: Error calling action method of component with id _id1_5:_id4 | org.apache.myfaces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:74) | javax.faces.component.UICommand.broadcast(UICommand.java:106) | javax.faces.component.UIData.broadcast(UIData.java:338) | javax.faces.component.UIViewRoot._broadcastForPhase(UIViewRoot.java:90) | javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:164) | org.apache.myfaces.lifecycle.LifecycleImpl.invokeApplication(LifecycleImpl.java:271) | org.apache.myfaces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:86) | javax.faces.webapp.FacesServlet.service(FacesServlet.java:94) | org.jbpm.webapp.filter.AuthenticationFilter.doFilter(AuthenticationFilter.java:55) | org.jbpm.web.JbpmContextFilter.doFilter(JbpmContextFilter.java:83) | org.jbpm.webapp.filter.LogFilter.doFilter(LogFilter.java:59) | org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:81) Anyone could tell me the reason? thanks View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3977785#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...