Hi, I am new in guvnor, please help me my code are bellow package com.sample; import org.drools.KnowledgeBase; import org.drools.RuleBase; import org.drools.WorkingMemory; import org.drools.agent.KnowledgeAgent; import org.drools.agent.KnowledgeAgentFactory; import org.drools.agent.RuleAgent; import org.drools.definition.KnowledgePackage; import org.drools.definition.type.FactType; import org.drools.runtime.StatefulKnowledgeSession; @SuppressWarnings("restriction") public class DroolDemo { /** * @param args * @throws IllegalAccessException * @throws InstantiationException */ public static void main(String[] args) throws InstantiationException, IllegalAccessException { KnowledgeAgent ruleAgent = KnowledgeAgentFactory.newKnowledgeAgent("/Guvnor.properties"); System.out.println(ruleAgent.getKnowledgeBase().getFactType("org.sample","NumberTest")); KnowledgeBase ruleBase = ruleAgent.getKnowledgeBase(); System.out.println(ruleBase.getFactType("org.sample","NumberTest")); FactType factType = ruleBase.getFactType("org.sample","NumberTest"); Object obj = factType.newInstance(); factType.set(obj, "numberone", 2); factType.set(obj, "numbertwo", 1); StatefulKnowledgeSession workingMemory = ruleBase.newStatefulKnowledgeSession(); workingMemory.insert(obj); workingMemory.fireAllRules(); System.out.println(factType.get(obj, "message")); } } ====================================================== Guvnor.properties: url=http://localhost:8080/guvnor/org.drools.guvnor.Guvnor/package/org.sample/testSnapShort2 enableBasicAuthentication=true username=admin password=admin name=drooltest ====================================================== Output: null null Exception in thread "main" java.lang.NullPointerException at com.sample.DroolDemo.main(DroolDemo.java:34) ====================================================== please help me thanks, Him -- View this message in context: http://drools.46999.n3.nabble.com/facing-problem-in-KnowledgeAgent-tp4023... Sent from the Drools: User forum mailing list archive at Nabble.com.