Hi,
I've been looking at taskService in a BPMN2 process and I don't seem to be able to define an optional argument. If I define an arg such as:
<jbpm:arg>
<jbpm:object expr="#{cc}" />
</jbpm:arg>
but do not have such a variable in the process instance by the time the task is invoked then it fails with the following error:
[DefaultCommandService] exception while executing command org.jbpm.pvm.internal.cmd.CompleteTaskCmd@f4189a
org.jbpm.pvm.internal.wire.WireException: couldn't invoke method doTest: couldn't create argument 3: script evaluation error: javax.el.PropertyNotFoundException: Cannot find property cc
at org.jbpm.bpmn.flownodes.JavaServiceTaskActivity.perform(JavaServiceTaskActivity.java:94)
So it seems all args must exist or am I doing something wrong? I would prefer to handle optional params in my service class. What do you think?
thanks in advance, Tim