User development, A new message was posted in the thread "JBPM 4.3 EL cannot read process property with null value": http://community.jboss.org/message/523324#523324 Author : Jakub Sobolewski Profile : http://community.jboss.org/people/jsobolewski Message: -------------------------------------------------------------- Adding 2 configuration parameters that say how engine should treat non-existing variables ([null / throw] with default null for Java and throw for EL) would solve backward compatibility issue and allow new users to adjust engine to their needs.  -------------------------------------------------------------- To reply to this message visit the message page: http://community.jboss.org/message/523324#523324