Hi I got a great answer to my last post and will like to say thank you to Jeffrey Schneller. I hope to contribute to the community once my drools knowledge base grows I have two quick follow up questions to my last post (1) I imported some rules validate which succesfully within guvnor but I have a couple of other rules that use maps on which I am getting errors. The map contains objects of a certain type Class1 and the map key is a Long (e.g 1L, 2L). The statement causing the error is of the format eval(Map[1L].getDirection== Map[2L].getDirection). The error I get is "unqualified type in strict mode for getDirection". I scoured the forums for a solution and learnt that I need to cast the object from the map to its specific type before calling any method of the class and so I changed it to eval(((Class1)Map[2L]).getDirection == ((Class1)Map[3L]).getDirection) but the errors only got worse. Is there a resolution for this "unqualified type in strict mode" error? I should also mention that I get no such error when working with the .DRL file in my java code outside guvnor. (2) The second issue I am dealing with involves those rules that validated in guvnor (I am running guvnor under JBOSS 4.2.3). I validated and built the package successfully (I did not create a snapshot for deployment). I then tried to reference the guvnor package to build the rulebase using the following java code RuleAgent agent = RuleAgent.newRuleAgent("guvnor.properties"); RuleBase masterRuleBase = agent.getRuleBase(); guvnor.properties contains only one entry url = http://localhost:8080/drools-guvnor/org.drools.guvnor.Guvnor/package/Some... I got this url from the guvnor deployment page The error I got when I ran this was "java.io.InvalidCastException: org.drools.rule.DialectRuntimeRegistry; local class incompatible: stream classdesc serailVersionUID= 5308493362083281112, local class serialVersionID = 510 Is there a compatibility issue between Guvnor and JBOSS 4.2.3 Thanks _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users