[rules-users] [drools 5.3.0.Final] Predicate ... must be a Boolean expression

I did a quick search in the mailing list, but couldn't find a related issue. The following rule worked fine in 5.3.0.CR1 (and earlier) ... when $party : ImmutableParty(addresses == null || addresses.size() == 0) then ... ImmutableParty has a getter for addresses and addresses is a

Re: [rules-users] [drools 5.3.0.Final] Predicate ... must be a Boolean expression

Yes, I found this out a few minutes ago. You indeed need 2.1.0.drools4. My mistake. Thanks! -- View this message in context: http://drools.46999.n3.nabble.com/drools-5-3-0-Final-Predicate-must-be-a-Boolean-expression-tp3454503p3454717.html Sent from the Drools: User forum mailing list archive at