[rules-users] accessing items from the StatelessKnowledgeSession

I have passed in some lists into the StatelessKnowledgeSession.execute() method and would like to figure out how to get access. I have the following items passed in: - Player - EarnedBadges (list) - Badges (list) and am trying to do something like this: not (EarnedBadge(playerId == $player.id, badge == $badge) from $earnedBadges) but it doesn't know how to evaluate earnedBadges (the name of the variable I passed in): [Unable to Analyse Expression $earnedBadges: [Error: unable to resolve method using strict-mode: java.lang.Object.$earnedBadges()] [Near : {... $earnedBadges ....}] Been searching through the docs on how to do this but I haven't found anything yet. Any help is greatly appreciated, thank you! :-). -warner