title: Get the timestamp of a folder using ANT build.xml
body: <p>Trying to get the timestamp of a results folder and print it, but unfortunately the following code is not working properly, </p>
  
  <pre><code>&lt;property name="timestamponresults" value="${dir}/Results"/&gt; 
             &lt;a:fileutil file="${timestamponresults}" property="results_date"&gt; 
                 &lt;a:lastmodified format="yyyy-MM-dd"/&gt; 
             &lt;/a:fileutil&gt; 
      &lt;echo message="timestamp on results folder is ${results_date}"&lt;/echo&gt; 
  </code></pre>
  
  <p>it shows the following error,
  The prefix "a" for element "a:fileutil" is not bound,Please suggest if there are any other alternatives</p>