Hi, I have encountered an infinite loop in the following example. Where TestVariable is has three fields, "context", "name", and "value". Context and name are Strings. Value is an Object. To work around the infinite loop, I need to do some ugly type casting. --------------------------- package testobjects; public class TestVariable { private String context; private String name; private Object value; public TestVariable() { } public TestVariable(String context, String name, Object value) { setContext(context); setName(name); setValue(value); } public String getContext() { return context; } public void setContext(String context) { this.context = context; } public String getName() { return name; } public void setName(String name) { this.name = name; } public Object getValue() { return value; } public void setValue(Object value) { this.value = value; } public String toString() { StringBuffer sbResult = new StringBuffer(17); sbResult.append(""); sbResult .append("context: ").append(getContext()).append(", ") .append("name: ").append(getName()).append(", ") .append("value: ").append(getValue()); return sbResult.toString(); } } --------------------------- package com.sample import testobjects.TestVariable import java.util.List rule "init" salience 1000 when eval(true); then insert (new TestVariable("Price Items Rules Context" , "Unit Price", null)); insert (new TestVariable("Price Items Rules Context", "Pricing Category", "INTERNATIONAL")); end rule "test 1" no-loop true when $unitPriceVariable : TestVariable(context == "Price Items Rules Context" && name == "Unit Price") TestVariable(context == "Price Items Rules Context" && name == "Pricing Category" && $pricingCategoryValue : value) $pricingCategory : String() from $pricingCategoryValue eval($pricingCategory.equals("INTERNATIONAL")) then $unitPriceVariable.setValue("542.00"); update($unitPriceVariable); end ------------ The problem goes away if I change the "test 1" rule into the following: rule "test 1" no-loop true when $unitPriceVariable : TestVariable(context == "Price Items Rules Context" && name == "Unit Price") TestVariable(context == "Price Items Rules Context" && name == "Pricing Category" && $pricingCategoryValue : value) eval(((String)$pricingCategoryValue).equals("INTERNATIONAL")) then // $unitPriceVariable.setValue("542.00"); update($unitPriceVariable); end