Re: [rules-users] Sliding Length Windows

Hello, Thank you for your response, I understand how the sliding window works now. However, when I use the code you wrote I get the following error: Exception in thread "main" java.lang.RuntimeException: Unable to resolve ObjectType 'List' : [Rule name='Rule2'] Unable to Analyse Expression $last2: [Error: unable to resolve method using strict-mode: java.lang.Object.$last2()] My rule looks like this: rule "Rule2" when $last2: List() from collect( Notif() over window:length(2) ) $nNewONT : Number() from accumulate ( Notif( specificProblem == "New ONT" ) from $last2, count() ) then ... end Do Lists require any additional code?... Thanks in advance, Diana -- View this message in context: http://drools.46999.n3.nabble.com/Sliding-Length-Windows-tp3438408p346743... Sent from the Drools: User forum mailing list archive at Nabble.com.