Tun Mang [http://community.jboss.org/people/tunmang] replied to the discussion "in jbpm 4.3, timer's event listener throws exception on ExecuteEventListener.java:68." To view the discussion, visit: http://community.jboss.org/message/555047#555047 -------------------------------------------------------------- Hi HuiSheng: Because the process never reached the next node "remove-file", that is why executeJob() was added to the event handler. (By the way, during the process the job entry has been automatically removed from jbpm4_job table though.) In the same process, if change the timer's node "generate-file" to the following, then it works (i.e. it reached the "remove-file" node):    <state g="222,123,147,40" name="generate-file">           <on event="start">        <event-listener>           <field name="msg"><string value="entered the (generate-file) state node."/></field>         </event-listener>             </on>       <transition g="-71,-15" name="timeout" to="remove-file">         <timer duedate="10 seconds"/>        </transition>              </state> Why it does not go to the next node if use the "timeout" event handler and how to make it work ? Thanks a lot for your help. -------------------------------------------------------------- Reply to this message by going to Community [http://community.jboss.org/message/555047#555047] Start a new discussion in jBPM at Community [http://community.jboss.org/choose-container!input.jspa?contentType=1&...]