Hello, i have a problem to use entity-beans (ejb 3.0) in a DRL-file. If i use java-beans everything works fine, but when I use the following rule with the "pruefungs"-entity object i get an exception. What is the problem, can i use EJB 3.0 entitybeans with drools? My rules are the following: rule "Test Entity" when p : Pruefung( name : pruefungsName ) then System.out.println( name ) end rule "Hello World" when m : Message( status == Message.HELLO, message : message ) then System.out.println( message ); m.setMessage( "Goodbye cruel world" ); m.setStatus( Message.GOODBYE ); update( m ); end and the exception that occurs: 12:29:31,093 INFO [STDOUT] cannot read rule file: /drools/rules/testRule.drl 12:29:31,093 ERROR [STDERR] org.drools.rule.InvalidRulePackage: Rule Compilation error : [Rule name=Test Entity, agendaGroup=MAIN, salience=0, no-loop=false] drools/rules/Rule_Test_Entity_0.java (8:25) : File drools/rules/Rule_Test_Entity_0.java, Line 8, Column 25: Expression "System.out.println(name)" is not a type 12:29:31,093 ERROR [STDERR] at org.drools.rule.Package.checkValidity(Package.java:424) 12:29:31,093 ERROR [STDERR] at org.drools.common.AbstractRuleBase.addPackage(AbstractRuleBase.java:361) 12:29:31,093 ERROR [STDERR] at drools.session.RuleEngineWrapper.<init>(RuleEngineWrapper.java:131) 12:29:31,093 ERROR [STDERR] at drools.session.RuleEngineWrapper.<init>(RuleEngineWrapper.java:59) 12:29:31,093 ERROR [STDERR] at drools.session.droolsManagementBean.startRuleEngineWrapper(droolsManagementB ean.java:35) 12:29:31,093 ERROR [STDERR] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 12:29:31,093 ERROR [STDERR] at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) 12:29:31,093 ERROR [STDERR] at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) 12:29:31,093 ERROR [STDERR] at java.lang.reflect.Method.invoke(Unknown Source) 12:29:31,093 ERROR [STDERR] at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:11 2) 12:29:31,093 ERROR [STDERR] at org.jboss.ejb3.interceptor.InvocationContextImpl.proceed(InvocationContextIm pl.java:166) 12:29:31,093 ERROR [STDERR] at org.jboss.ejb3.interceptor.EJB3InterceptorsInterceptor.invoke(EJB3Intercepto rsInterceptor.java:63) 12:29:31,093 ERROR [STDERR] at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:10 1) 12:29:31,093 ERROR [STDERR] at org.jboss.ejb3.entity.TransactionScopedEntityManagerInterceptor.invoke(Trans actionScopedEntityManagerInterceptor.java:54) 12:29:31,093 ERROR [STDERR] at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:10 1) 12:29:31,093 ERROR [STDERR] at org.jboss.ejb3.AllowedOperationsInterceptor.invoke(AllowedOperationsIntercep tor.java:46) 12:29:31,093 ERROR [STDERR] at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:10 1) 12:29:31,093 ERROR [STDERR] at org.jboss.aspects.tx.TxPolicy.invokeInOurTx(TxPolicy.java:79) 12:29:31,093 ERROR [STDERR] at org.jboss.aspects.tx.TxInterceptor$Required.invoke(TxInterceptor.java:191) 12:29:31,093 ERROR [STDERR] at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:10 1) 12:29:31,093 ERROR [STDERR] at org.jboss.aspects.tx.TxPropagationInterceptor.invoke(TxPropagationIntercepto r.java:76) 12:29:31,093 ERROR [STDERR] at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:10 1) 12:29:31,093 ERROR [STDERR] at org.jboss.ejb3.stateless.StatelessInstanceInterceptor.invoke(StatelessInstan ceInterceptor.java:62) 12:29:31,093 ERROR [STDERR] at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:10 1) 12:29:31,109 ERROR [STDERR] at org.jboss.aspects.security.AuthenticationInterceptor.invoke(AuthenticationIn terceptor.java:77) 12:29:31,109 ERROR [STDERR] at org.jboss.ejb3.security.Ejb3AuthenticationInterceptor.invoke(Ejb3Authenticat ionInterceptor.java:102) 12:29:31,109 ERROR [STDERR] at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:10 1) 12:29:31,109 ERROR [STDERR] at org.jboss.ejb3.ENCPropagationInterceptor.invoke(ENCPropagationInterceptor.ja va:47) 12:29:31,109 ERROR [STDERR] at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:10 1) 12:29:31,109 ERROR [STDERR] at org.jboss.ejb3.asynchronous.AsynchronousInterceptor.invoke(AsynchronousInter ceptor.java:106) 12:29:31,109 ERROR [STDERR] at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:10 1) 12:29:31,109 ERROR [STDERR] at org.jboss.ejb3.stateless.StatelessContainer.dynamicInvoke(StatelessContainer .java:263) 12:29:31,109 ERROR [STDERR] at org.jboss.aop.Dispatcher.invoke(Dispatcher.java:106) 12:29:31,109 ERROR [STDERR] at org.jboss.aspects.remoting.AOPRemotingInvocationHandler.invoke(AOPRemotingIn vocationHandler.java:82) 12:29:31,109 ERROR [STDERR] at org.jboss.remoting.ServerInvoker.invoke(ServerInvoker.java:828) 12:29:31,109 ERROR [STDERR] at org.jboss.remoting.ServerInvoker.invoke(ServerInvoker.java:681) 12:29:31,109 ERROR [STDERR] at org.jboss.remoting.transport.socket.ServerThread.processInvocation(ServerThr ead.java:358) 12:29:31,109 ERROR [STDERR] at org.jboss.remoting.transport.socket.ServerThread.dorun(ServerThread.java:412 ) 12:29:31,109 ERROR [STDERR] at org.jboss.remoting.transport.socket.ServerThread.run(ServerThread.java:239) 12:29:31,109 INFO [STDOUT] exception in 'droolsManagementBean.startRuleEngineWrapper(String, ArrayList<Object>)', cannot handle it...