Hi, I tried creating/compiling/executing the following rule using the drools eclipse workbench: package com.sample import org.domain.CreditCard; rule "Credit Eligibility" no-loop true when cc : CreditCard( age > 18, annualIncome > 50000, asset> 500000 ) then cc.setEligibilityStatus( "Eligible for credit card" ); System.out.println("Valid Credit Score "); modify( cc ); end I was successfully able to run the rule against my CreditCard object. However, when I tried running it from withing my applicaiton by embedding drools(latest, the following error occurs: org.drools.rule.InvalidRulePackage: Rule Compilation error : [Rule name=Credit Eligibility, agendaGroup=MAIN, salience=0, no-loop=true] com/sample/Rule_Credit_Eligibility_0.java (13:652) : The method modify(CreditCard) is undefined for the type Rule_Credit_Eligibility_0 at org.drools.rule.Package.checkValidity(Package.java:424) at org.drools.common.AbstractRuleBase.addPackage(AbstractRuleBase.java:384) at org.drools.jsr94.rules.admin.RuleExecutionSetImpl.<init>(RuleExecutionSetImpl.java:130) at org.drools.jsr94.rules.admin.LocalRuleExecutionSetProviderImpl.createRuleExecutionSet(LocalRuleExecutionSetProviderImpl.java:233) at org.drools.jsr94.rules.admin.LocalRuleExecutionSetProviderImpl.createRuleExecutionSet(LocalRuleExecutionSetProviderImpl.java:176) at org.drools.jsr94.rules.admin.LocalRuleExecutionSetProviderImpl.createRuleExecutionSet(LocalRuleExecutionSetProviderImpl.java:96) Any pointers would be much appreciated! Prem