I have a class which contains some lists, I want to apply rules on size of list and want to use functions like first(), last() but list objects which are in my class are identified as collections and only collection related functions are shown. For eg. class A { java.util.List bList = new ArrayList(); } now it shows bList as collection type and it doesn't shows size and related list function instead shows collection functions like contains etc. Can't I use it like both a collection as well as List? I tried importing java.util.List but it still don't recognize my List objects as List -- View this message in context: http://drools.46999.n3.nabble.com/check-list-size-tp4030303.html Sent from the Drools: User forum mailing list archive at Nabble.com.