gistfile1.xml

<service name="selecting-jms-queue-requester">
  <inbound>
    <inbound-endpoint ref="select-jms-queue" responseTimeout="3000" />
  </inbound>
  <script:component>
    <script:script engine="groovy">
      <script:text>
        eventContext.requestEvent("jms://fixedQueue?selector=userId%3D%27${userId}%27",
                                  eventContext.timeout)
      </script:text>
    </script:script>
  </script:component>
</service>