[jboss-user] [jBPM] - How can we compare null in the jpdl file

Bo meng [http://community.jboss.org/people/billmeng70] created the discussion "How can we compare null in the jpdl file" To view the discussion, visit: http://community.jboss.org/message/570360#570360 -------------------------------------------------------------- Hi there, I have below information in my jpdl.xml file, decision name="waitDecision">   <transition name="OK" to="wait">    <condition expr="#{responseData == null}"/>   </transition>   <transition to="end"/> </decision> If I set responseData a null value and I got exception like below INFO: exception while executing command mailto:org.jbpm.pvm.internal.cmd.StartProcessInstanceInLatestCmd@13d638c org.jbpm.pvm.internal.cmd.StartProcessInstanceInLatestCmd@13d638c org.jbpm.api.JbpmException: script evaluation error: javax.el.PropertyNotFoundException: Cannot find property responseData at org.jbpm.pvm.internal.script.ScriptManager.evaluate(ScriptManager.java:130) It workes in Jbpm 4.0 cr1, now we use Jbpm 4.3. Can we compare null object in jpdl? Thanks, Bo -------------------------------------------------------------- Reply to this message by going to Community [http://community.jboss.org/message/570360#570360] Start a new discussion in jBPM at Community [http://community.jboss.org/choose-container!input.jspa?contentType=1&...]