[rules-users] temporal operator "includes" not working

Hi, I've following event declarations and rule: declare Event     @role(event)     @timestamp(datetime)     datetime : Date     name : String end declare Contest     @role(event)     @timestamp (startTimestamp)     startTimestamp : Date     endTimestamp : Date end rule "Contest" no-loop when        $e : Event(name == "event1")     $contest : Contest(this includes $e) then     System.out.println("rule Contest fired"); end The timestamps with Event and Contest objects are set as follows (before insert in state-full session):            // for Contest object            Calendar c = Calendar.getInstance();             c.set(2011, 7, 1);             contestType.set(contest, "startTimestamp", new Date(c.getTimeInMillis()));             c.set(2011, 7, 31);             contestType.set(contest, "endTimestamp", new Date(c.getTimeInMillis()));             // for Event object              c.set(2011, 7, 3);              eventType.set(event, "datetime", new Date(c.getTimeInMillis())); The condition "this includes $e" in LHS doesn't get evaluated to true and RHS doesn't get executed. If I change it to "$contest.startTimestamp before $e, $contest.endTimestamp after $e"  which has the same meaning then it works fine. Please help in resolving the issue. Thanks & Regards, Neelesh