When I'm trying to evaluate expression on condition Node I'm getting org.jbpm.api.JbpmException: script evaluation error: Cannot find property content. Though this error is self explanatory, I didn't understand is why there is such restriction on script evaluation even for NULL validation of this property?? <condition expr="#{content == null}" /> View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4265758#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...