[rules-users] Problem evaluating with Enum

I have encountered the following problem using enums in drools. I have an enum defined called ETimeConstraint, something of the sort: public enum ETimeConstraint { NO_CONSTRAINT, TODAY, TOMORROW, ; } Now I wish to filter sentences which reside in the working memory based on a time constraint which is of this enum type. I created the following test rule rule "My Test" when $sentences: ArrayList() from collect (IPhoneSentences.Sentence( descriptor contains ETimeConstraint )) then //something end this does not work meaning no sentence are selected although I know that there are sentences in the working memory. but when I add ETimeConstraint.name it does: rule "My Test" when $sentences: ArrayList() from collect (IPhoneSentences.Sentence( descriptor contains ETimeConstraint.name )) then //something end I can stick to this workaround but it becomes very problematic to work this way. Furthermore once I wish to define a variable for example defining $timeConstraint : rule "My Test" when $cm: Condition( $timeConstraint: contextIntention, ) $sentences: ArrayList() from collect (IPhoneSentences.Sentence( descriptor contains $timeConstraint )) then //something end this will not work because I can't put $timeConstraint.name any suggestions? I am running: - Drools 5.2.0 - Eclipse Helios - JBoss 5.1.0 Thanks Hezi