HuiSheng Xu [http://community.jboss.org/people/rebody] replied to the discussion "jBpm 4.3 service task has no optional args?" To view the discussion, visit: http://community.jboss.org/message/557194#557194 -------------------------------------------------------------- Hi Tim, There is a little problem on jBPM-4.3.  It can't identify whether this specified variable is not existed or is null.  It had been fixed in jBPM-4.4.  I suggest you to have a try jBPM-4.4. -------------------------------------------------------------- Reply to this message by going to Community [http://community.jboss.org/message/557194#557194] Start a new discussion in jBPM at Community [http://community.jboss.org/choose-container!input.jspa?contentType=1&...]