Hi. I am trying to implement the following rule using a guided rule in Guvnor. It works successfully in the Eclipse environment. rule "SevereHypoglycemia" no-loop true when $event : GlucoseEvent(input.glucoseValue <= glucoseConst.severeHypoglycemiaThreshold); then GlucoseResult result = $event.getResult(); result.setNewInsulin(0); double nextTime = glucoseCalc.calculateDuration(1.0, $event.getInput().getGlucoseValue(), $event.getInput().getGlucoseTime(), null, null); result.setHoursToNextMeasurement(nextTime); result.setDextroseGr(0.5); result.setNotifyPhysician(true); $event.setResult(result); update($event); System.out.println("SevereHypoglycemia rule ran."); end I have imported the jar file and can see all of the objects. The problem I am having is with the nested object model. I can reference the GlucoseEvent.input.glucoseValue field successfully, but the only comparison operators I get are 'equals too' and 'not equals to'. They type of glucoseValue is double and I need to do relational comparison as in the rule above. If I do a 'View Source' on the rule in BRMS, this is what I see if I use the 'equals' operator: rule "Rule1" dialect "mvel" when GlucoseEvent( input.glucoseValue == "40" ) then end Is this bug or does the guided rule editor only support flat object models? Thanks, Herman Post -- View this message in context: http://www.nabble.com/Guvnor-guided-rule-and-nested-objects-tp22729787p22... Sent from the drools - user mailing list archive at Nabble.com.