Hi Edson, Yes, you guessed right. We are using drools 5.0.1. Exception in thread "main" org.jcvi.annotation.rulesengine.RulesResourceException: Could not parse resource in [FileResource file='C:\development\workspace\RulesBasedAnnotation\tests\org\jcvi\annot ation\rules\testNestedOr.drl'] with errors [14,4]: [ERR 101] Line 14:4 no viable alternative at input 'blast_hit' in rule "2645|lysine decarboxylase CadA" in pattern or[22,2]: [ERR 102] Line 22:2 mismatched input ')' expecting 'then' in rule "2645|lysine decarboxylase CadA" at org.jcvi.annotation.rulesengine.RulesEngine.addResource(RulesEngine.java :103) at org.jcvi.annotation.rulesengine.RulesEngine.addResource(RulesEngine.java :83) at org.jcvi.annotation.Aruba.addRuleByFile(Aruba.java:68) at org.jcvi.annotation.Aruba.main(Aruba.java:253) Thank you in advance for your help, Nelson ------------------------------ Message: 2 Date: Tue, 19 Jan 2010 11:43:32 -0500 From: Edson Tirelli <ed.tirelli(a)gmail.com&gt; Subject: Re: [rules-users] nested boolean expressions using prefixOr To: Rules Users List <rules-users(a)lists.jboss.org&gt; Message-ID: <e6dd5ba31001190843u484568a5q150c6eda77ed004d(a)mail.gmail.com&gt; Content-Type: text/plain; charset="windows-1252" Nelson, Can you provide details on which exact version of drools (5.0.1?) you are using and what is the error/stack trace you are receiving? Thanks, Edson _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users