After asserrting the following objects and performing the rule I get the error shown PersonSummary personSummary = new PersonSummary(); personSummary.setPrId(new Long(217)); personSummary.setCmpntCd(new Character('R')); PersonSummary personSummary2 = new PersonSummary(); personSummary2.setPrId(new Long(217)); personSummary2.setCmpntCd(new Character('G')); ################################## rule "Duplicate Projection for same processing date by another component" when $j : PersonSummary($prId : prId, $cmpntCd : cmpntCd) exists PersonSummary(this != $j, cmpntCd == $cmpntCd) then System.out.println("Error Found in rule Duplicate Component Code"); end ################################## java.lang.ClassCastException: org.drools.rule.VariableRestriction$ObjectVariableContextEntry at org.drools.base.evaluators.CharacterFactory$CharacterEqualEvaluator.evaluateCac hedRight(CharacterFactory.java:99) at org.drools.rule.VariableRestriction.isAllowedCachedRight (VariableRestriction.java:78) at org.drools.rule.VariableConstraint.isAllowedCachedRight (VariableConstraint.java:78) at org.drools.common.DoubleBetaConstraints.isAllowedCachedRight (DoubleBetaConstraints.java:149) If I change the exists rule to: exists PersonSummary(this != $j, cmpntCd == 'A') it works fine. Is there something I have to do to compare two char objects. Thanks _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users