[rules-users] getting latest date

Update vs insertHI all. I am inserting an Obect from a class called Data() to the working memory Data object has a Collection (ArrayList) of Objects from a class called MemberDataRecords() MemberDataRecords object has a field called loggedInDate of type Date()(Accually SimpleDate a subclass of java util date()) how can i get MemberDataRecords object which contain the last loggedInDate Kapila Silwathge