[standalone@localhost:9999 hornetq-server=default] :write-attribute(name=clustered, value=true)
{
    "outcome" => "failed",
    "failure-description" => "JBAS014749: Operation handler failed: JBAS011664: Runtime handling for clustered is not implemented",
    "rolled-back" => true
}

17:19:08,754 INFO  [org.jboss.as] (Controller Boot Thread) JBAS015874: JBoss AS 7.2.0.Alpha1-SNAPSHOT "Steropes" started in 2164ms - Started 159 of 312 services (152 services are passive or on-demand)
17:19:14,548 INFO  [org.jboss.as.controller.management-deprecated] (management-handler-thread - 2) JBAS014627: Attribute clustered is deprecated, and it might be removed in future version!
17:19:14,551 ERROR [org.jboss.as.controller.management-operation] (management-handler-thread - 2) JBAS014612: Operation ("write-attribute") failed - address: ([
    ("subsystem" => "messaging"),
    ("hornetq-server" => "default")
]): java.lang.UnsupportedOperationException: JBAS011664: Runtime handling for clustered is not implemented
	at org.jboss.as.messaging.HornetQServerControlWriteHandler.applyOperationToHornetQService(HornetQServerControlWriteHandler.java:130)
	at org.jboss.as.messaging.HornetQServerControlWriteHandler.applyUpdateToRuntime(HornetQServerControlWriteHandler.java:86)
	at org.jboss.as.controller.AbstractWriteAttributeHandler$1.execute(AbstractWriteAttributeHandler.java:116) [jboss-as-controller-7.2.0.Alpha1-SNAPSHOT.jar:7.2.0.Alpha1-SNAPSHOT]
	at org.jboss.as.controller.AbstractOperationContext.executeStep(AbstractOperationContext.java:439) [jboss-as-controller-7.2.0.Alpha1-SNAPSHOT.jar:7.2.0.Alpha1-SNAPSHOT]
	at org.jboss.as.controller.AbstractOperationContext.doCompleteStep(AbstractOperationContext.java:321) [jboss-as-controller-7.2.0.Alpha1-SNAPSHOT.jar:7.2.0.Alpha1-SNAPSHOT]
	at org.jboss.as.controller.AbstractOperationContext.completeStepInternal(AbstractOperationContext.java:228) [jboss-as-controller-7.2.0.Alpha1-SNAPSHOT.jar:7.2.0.Alpha1-SNAPSHOT]
	at org.jboss.as.controller.AbstractOperationContext.executeOperation(AbstractOperationContext.java:223) [jboss-as-controller-7.2.0.Alpha1-SNAPSHOT.jar:7.2.0.Alpha1-SNAPSHOT]
	at org.jboss.as.controller.ModelControllerImpl.internalExecute(ModelControllerImpl.java:135) [jboss-as-controller-7.2.0.Alpha1-SNAPSHOT.jar:7.2.0.Alpha1-SNAPSHOT]
	at org.jboss.as.controller.ModelControllerImpl.execute(ModelControllerImpl.java:111) [jboss-as-controller-7.2.0.Alpha1-SNAPSHOT.jar:7.2.0.Alpha1-SNAPSHOT]
	at org.jboss.as.controller.remote.ModelControllerClientOperationHandler$ExecuteRequestHandler.doExecute(ModelControllerClientOperationHandler.java:139) [jboss-as-controller-7.2.0.Alpha1-SNAPSHOT.jar:7.2.0.Alpha1-SNAPSHOT]
	at org.jboss.as.controller.remote.ModelControllerClientOperationHandler$ExecuteRequestHandler$1.execute(ModelControllerClientOperationHandler.java:108) [jboss-as-controller-7.2.0.Alpha1-SNAPSHOT.jar:7.2.0.Alpha1-SNAPSHOT]
	at org.jboss.as.protocol.mgmt.AbstractMessageHandler$2$1.doExecute(AbstractMessageHandler.java:296) [jboss-as-protocol-7.2.0.Alpha1-SNAPSHOT.jar:7.2.0.Alpha1-SNAPSHOT]
	at org.jboss.as.protocol.mgmt.AbstractMessageHandler$AsyncTaskRunner.run(AbstractMessageHandler.java:518) [jboss-as-protocol-7.2.0.Alpha1-SNAPSHOT.jar:7.2.0.Alpha1-SNAPSHOT]
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110) [rt.jar:1.6.0_24]
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603) [rt.jar:1.6.0_24]
	at java.lang.Thread.run(Thread.java:679) [rt.jar:1.6.0_24]
	at org.jboss.threads.JBossThread.run(JBossThread.java:122) [jboss-threads-2.0.0.GA.jar:2.0.0.GA]