I have one node process with a workflow group with two rules as follows: rule "Test" ruleflow-group "StudioSampleListenerValidate" when then System.out.println("GOT HERE FIRST"); end rule "StudioSampleListener" ruleflow-group "StudioSampleListenerValidate" when processInstance : WorkflowProcessInstance() then System.out.println("GOT HERE"); end Without the first rule (Test) the seconds rules println with not run. Does this make any sense? On another front, I am trying to write rules that have constraints that use a process variable (i.e. passed through the startProcess parameter map). I have them registered in my RuleFlow process but my rule never fire. I am following the banking example in the Drools book but I am having no luck. Any suggestions? TIA, Bob -- View this message in context: http://drools-java-rules-engine.46999.n3.nabble.com/Simple-process-not-wo... Sent from the Drools - Dev mailing list archive at Nabble.com.