unfortunately one of the facts (which is provided others) has an attribute "duration", and rules are not getting compiled... rule "Duration Check" when ThirdPartyFact( duration > 40 ) then ... end Drools (3.0.4) documentation says: "There are some reserved keywords that are used in the rule language. It is wise to avoid collisions with these words when naming your domain objects, properties, methods, functions and so on that are used in the rule text. The following list are words that you should try and avoid in the rule contents if possible (often times it will work fine, but in some cases the rules may be parsed incorrectly)" especially the last sentence is very confusing.. it does not rule out possibility attribute names like "duration". even eclipse plugin does not report an error!! but compiling with package builder failed saying "Unexpected token 'duration'" :( i feel Drools should always allow attributes with name same as that of a keyword. duration is a very common name... or at least the documentation & plugin should strictly disallow such usage. _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users