Hello All, I'm using Guvnor 5.3.0-Final with Tomcat 6.0 testing the following simple rule getting unexpected results. Maybe someone can give me a hint whats wrong in my rule. Thanks in advance! Axel Short Rule description: A list is built from selected event-facts evalEvent(@role (event), Double f, String wam) over a certain window in a first line (because I found the hint to do it seperately in another thread). Next, I want to caclculate the avarage, but only from the selected events in the list. Finally, I check a certain limit with the average and the RHS is just inserting a fact to generate some output in the test case. rule "Event Processing Evaluation" dialect "mvel" when $list:java.util.List() from collect( evalEvent(wam == 'D1', f != null) over window:length( 1 )) $average:Double() from accumulate( evalEvent($vf:f) from $list,average($vf) ) eval($average > 5) then internalEvent fact0 = new internalEvent(); fact0.setDesrc( "Internal Event: "+ $average ); insert(fact0 ); end Test details from Guvnor Test that delivers an (for me) unexpected result: I'm inserting three events, where the avarage of all three events is over the limit, but taken only the last or last two (same result) as I want to do with the window:length is not and shoud therefore not fire the rule. I added below output details from the Guvnor Test that shows the following: The list seams to be right (only the last event in $list), the avarage seams to be right ($average = 5.0) - but the rule still fires. It seams for me that the average of all three evnts is internally used for eval($average > 5). I tried a lot of variants, but nothing works well. I'd like to check to use an entry-point if that changes the result, but I found no way within the Guvnor Test Case Editor putting enty points in for events. OBJECT ASSERTED value:evalEvent( wam=D1, f=6.0 ) factId: 1 OBJECT ASSERTED value:evalEvent( wam=D1, f=5.0 ) factId: 6 OBJECT ASSERTED value:evalEvent( wam=D1, f=5.0 ) factId: 9 FIRING rule: [Event Processing Evaluation] activationId:Event Processing Evaluation [3, 2, 0] declarations: $list=[evalEvent( wam=D1, f=5.0 )](2); $average=5.0(3) OBJECT ASSERTED value:internalEvent( desrc=Internal Event: 5.0 ) factId: 12 -- View this message in context: http://drools.46999.n3.nabble.com/Guvnor-5-3-0-Final-Rule-using-accumulat... Sent from the Drools: User forum mailing list archive at Nabble.com. _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users