[rules-users] Strange rule compilation issue.

Hi, I have the following MVEL expression in a rule (with drools 5.1.0M1): Scenario( id == 6147 ) Scenario is an interface which has the following accessor (and tons of other methods): public interface Scenario { ... public int getId(); ... } But either in Eclipse or when compiling the rules I get the following error: Unable to create Field Extractor for 'id' of '[ClassObjectType class=com.daysofwonder.mm.Scenario]' I tried tons of variants including: Scenario( getId == 6147 ) that still doesn't work. The only variant I could make work is: $s : Scenario( ) Scenario ( eval($s.getId() == 6147 ) ) which is plain ugly. using something else than a Scenario or defining a new interface with only getId() in it makes it work. Any idea about what I got wrong? How can I debug the situation? Thanks, -- Brice Figureau My Blog: http://www.masterzen.fr/