How to use Message Selector in BPEL

Hi all
I´m using a JMS Adapter to consume messages from a JMS queue (a JMS adapter which create the BPEL instance when a message arrives).
The process must select messages which meet certain criterias, so I´m using Message Selector to filter the messages and only pick up the ones who interest me .
But I am not able to get it to work.
I want JMS adapter to consume messages based on field "MessageID" =1006 in my message.
So in my message selector I wrote MessageID =1006
But its not picking up message.Kindly help what am i doing wrong.
Thanks in advance.
Karan

yes it is the message producer who should set the property
see http://download.oracle.com/javaee/6/api/javax/jms/Message.html the various setXXXProperty(name, value)
once the message is on the queue, I am not aware of a way to change its properties, unless by consuming it and reposting it modified...
well if you are really desperate you can write a MDB who consumes all messages without a given property and repost them WITH the property.... better if reposting to a different queue to avoid trouble...

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