title: how to set expiry in IBM MQ message header using Apache Camel
body: <p>We are using Spring-Boot and Apache camel to connect to IBM MQ. We need to set expiry in MQMessages so that if we do  not get any response , the message should expire in 60 sec. We have added header like below :</p>
  
  <p>setHeader(WMQConstants.WMQ_EXPIRY, constant(600));</p>
  
  <p>But the header is being added like :</p>
  
  <pre><code>&lt;usr&gt;
  &lt;breadcrumbId&gt;ID-ff9c1ce374f9-1544430870241-0-2&lt;/breadcrumbId&gt;
  &lt;expiry dt='i4'&gt;60000&lt;/expiry&gt;
  </code></pre>
  
  <p>it is not adding to MQMD header and while browsing the message it is showing the expiry value as "-1" i.e the message will never expire.</p>
  
  <p>Could you please tell me how to set MQMD header in Apache Camel?</p>