title: Grails if exist else within config
body: <p>Some search results are being persisted to the view through config:</p>
  
  <pre><code>   Results:[
        [heading:'Id', property:'id'],
        [heading:'Title', property:'title'],
        [heading:'Status', property:'status?.value : "Awaiting value" '],
        [heading:'Timestamp', property:'timestamp']
      ]
  </code></pre>
  
  <p>The Status dose not work.
  What i am after is so is status.value does not exist then show "Awaiting value"</p>
  
  <p>I am not sure what is work with :</p>
  
  <pre><code> status?.value : "Awaiting value"
  </code></pre>
  
  <p>It looks fine to me any ideas?</p>