Re: [jboss-user] [jBPM] - jBpm 4.3 service task has no optional args?

Tim S [http://community.jboss.org/people/tstephen] replied to the discussion "jBpm 4.3 service task has no optional args?" To view the discussion, visit: http://community.jboss.org/message/559043#559043 -------------------------------------------------------------- Thanks for the reply. I did upgrade to 4.4 and after a little  head-scratching I realised I was encountering JBPM-2830. Your patch  restored my application built on 4.3 to the point that I can start and  list process instances so I'm hoping it is agreed to restore the  previous behaviour. I tried again to call a Java Service Task with an arg that is not populated at the time the service task is invoked:     <itemDefinition id="registerUserItemDef" >          <jbpm:arg>              <jbpm:object expr="#{user}" />          </jbpm:arg>          <jbpm:arg>              <jbpm:object expr="#{groups}" />          </jbpm:arg>      </itemDefinition>     ...     <operation id="registerUser" name="registerUser"> and this time I get a different error:   org.jbpm.pvm.internal.wire.WireException: couldn't invoke  method registerUser: couldn't create argument 1: Cannot resolve  identifier 'groups'        at org.jbpm.bpmn.flownodes.JavaServiceTaskActivity.perform(JavaServiceTaskActivity.java:92) Once again, creating a variable named groups allows the service task to be invoked successfully. Tim -------------------------------------------------------------- Reply to this message by going to Community [http://community.jboss.org/message/559043#559043] Start a new discussion in jBPM at Community [http://community.jboss.org/choose-container!input.jspa?contentType=1&...]