How to set JMS message properties via JMSRouter ?

Issue

• We are attempting to configure a JMSRouter to send a JMS ObjectMessage to a JMS queue.
  We wish to set multiple properties on the JMS ObjectMessage via jboss-esb.xml file.
  The configuration below doesn't seem to be setting the message properties through message-prop property.

<action class="org.jboss.soa.esb.actions.routing.JMSRouter" name="JMS-routing">
     <property name="jndiName" value="queue/Test-response-queue"/>
     <property name="connection-factory" value="ClusteredConnectionFactory"/>
     <property name="unwrap" value="true"/>
     <property name="message-prop" value="ClientMsgID=test SessionID=CLID-0011442"/>
    </action>

I'm not sure if the format for specifying the "message-prop" property is correct. Can you please advice us how solve this problem?