[rules-users] before/after behavior for negative pattern

Hi all, I try to detect the beginning of a scenario which is characterized by an event happening after no other event of the same type has happened in the last 90sec. I can't understand why only the first of those two rules is working. rule "Detect Scenario beginning" when $start : RawEvent() not RawEvent(id == $start.id, $start after[0ms, 90s] this) then System.out.println($start); end rule "Detect Scenario beginning alt" when $start : RawEvent() not RawEvent(id == $start.id, this before[0ms, 90s] $start) then System.out.println($start); end Moreover if the first sent event is a rawEvent none of them will detect it. Where am i wrong ? (still a beginner with drools) PS : I already posted it on the forum, but i forgot to complete all the subscription steps so it was rejected. Sorry for the double post. -- View this message in context: http://drools.46999.n3.nabble.com/before-after-behavior-for-negative-patt... Sent from the Drools: User forum mailing list archive at Nabble.com.