Update
Hi,
I found out what means "Event node 'event' [4] should specify an event type."
It's because of it need to sepcify a org.jbpm.process.core.event.EventTypeFilter for each Event. I know how to add a EventTypeFilter for Event when coding in Process API directly. But now, I don't konw how to specify that through BPMN2 visual editor.
Thanks.