Hi! I would like to use the accumulate function in my rule. I found this: http://www.docjar.com/html/api/org/drools/compiler/PackageBuilderConfigur... but i don't know exactly, which imports I need to the package and how can I make it work. This is my rule: rule "aktivitas" when Adattipus(ertek == "mozgas") $max_sorszam : Number() from accumulate(MertAdat($sorszam : sorszam), max($sorszam)) $aktiv_mozgas_cimke_szam : Number(intValue < 90) from accumulate(MertAdat(sorszam > $max_sorszam - (7 * 24 * 60), $cimke : cimke == "aktiv_mozgas"), count($cimke)) then end Sorry for this simple question! -- View this message in context: http://n3.nabble.com/accumulate-function-help-tp67445p67445.html Sent from the Drools - User mailing list archive at Nabble.com. _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users