Exactly. Also, you need to make sure you "tell the engine" everytime your Time object change, as well as ensure that fireAllRules will be called at the exact time: 22:00, because if it is called 1 minute later or before, the constraint will evaluate to false. Edson 2008/5/7 Christine <christine(a)christine.nl <mailto:christine@christine.nl>>: > Hi everyone, > For example: > when Time(hour==22,minute==0) Lamp(status==1) > then > Console.Writeline("It's late,turn off the light and go to bed") > where time is a class that return the current hour; Claudio, this would probably work if you fire the rules every hour or every minute or every time your Time object changes. Just having the rules sitting in your rulebase doesn't mean they get executed. Christine _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org <mailto:rules-users@lists.jboss.org> https://lists.jboss.org/mailman/listinfo/rules-users -- Edson Tirelli JBoss Drools Core Development Office: +55 11 3529-6000 Mobile: +55 11 9287-5646 JBoss, a division of Red Hat @ www.jboss.com <http://www.jboss.com> ------------------------------------------------------------------------ _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users