try with "type" and not "Type" as well ________________________________ From: rules-users-bounces(a)lists.jboss.org [mailto:rules-users-bounces@lists.jboss.org] On Behalf Of fakhfakh ismail Sent: Monday, April 09, 2007 7:14 AM To: rules-users(a)lists.jboss.org Subject: [rules-users] code error hello, when I execute this code rule "sample6" when act :activity( Type == 5) //nod: act.getNodeProperty() //nod.Property(key1: Key, value1:value) //nod.Property(key2: Key, value==value1) then System.out.println("deux clés ont la meme valeurs"); end error is affiiched Exception in thread "main" org.drools.rule.InvalidRulePackage: Unable to create Field Extractor for 'Type' at org.drools.rule.Package.checkValidity(Unknown Source) at org.drools.common.AbstractRuleBase.addPackage(Unknown Source) at org.drools.jsr94.rules.admin.RuleExecutionSetImpl.<init>(Unknown Source) at org.drools.jsr94.rules.admin.LocalRuleExecutionSetProviderImpl.createRuleExecutionSet(Unknown Source) at org.drools.jsr94.rules.admin.LocalRuleExecutionSetProviderImpl.createRuleExecutionSet(Unknown Source) at org.drools.jsr94.rules.admin.LocalRuleExecutionSetProviderImpl.createRuleExecutionSet(Unknown Source) at com.sample.Rule.fireRules(Rule.java:41) at com.sample.Rule.fireRules(Rule.java:70) at com.sample.DroolsTest.main(DroolsTest.java:59) however the attribut Type exist in class activity Best regard Thank you for your help ________________________________ Découvrez une nouvelle façon d'obtenir des réponses à toutes vos questions ! Profitez des connaissances, des opinions et des expériences des internautes sur Yahoo! Questions/Réponses <http://fr.rd.yahoo.com/evt=42054/*http://fr.answers.yahoo.com> . ----------------------------------------- ******************************************************************* *** This email and any files transmitted with it are confidential and intended solely for the individual or entity to whom they are addressed. If you have received this email in error destroy it immediately. ****************************************************** **************** Wal-Mart Confidential **************************** ******************************************