unable to set JMSXGroupID using ServiceMix/Camel

[boday]

I'm trying to use the ActiveMQ Message Groups technology, but have been
unable to get the JMSXGroupID value set.  I have inbound HTTP messages that
go to a queue for processing.  I need the consumers of this queue to be
single threaded for a given subset of messages...  

I've tried 3 different approaches, but each time when I look in JMX at the
messages in queue test2...the JMSXGroupID is always null...

//approach #1

from("activemq:test1")
.setHeader("JMSXGroupID", "testID"))
.to(activemq:test2");

//approach #2

        @Produce(uri = "activemq:test2")
        ProducerTemplate producer;

        @Consume(uri = "jetty:http://0.0.0.0:9000/inbound/";)
        @InOnly
        public void onMessage(String msg)
        {
               producer.sendBodyAndHeader(msg,"JMSXGroupID","testID"); 
        }

//approach #3

from("activemq:test1")
.process(new Processor() {
    public void process(Exchange exchange) throws Exception {
        Message inMessage = exchange.getIn();
        exchange.getOut().copyFrom(inMessage);
        exchange.getOut().setHeader("JMSXGroupID","testID");
    }
.to(activemq:test2");

Is there something else I need to do to use this feature?  Does JMX console
not display this value correctly?

note - I'm using SMX 3.3.1 and Camel 1.6.1...

thanks...   



-----
Ben - Senior Consultant

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