title: how to do for loop based on a limit in Ant
body: <p>In Ant-contrib, we can do something like:</p>
  
  <pre><code>&lt;for list="a,b,c,d" param="instence"&gt;
  </code></pre>
  
  <p>But if I don't have a list, I only have a limit, e.g. limit=4.</p>
  
  <p>Is there a way to do for loop based on limit, like:</p>
  
  <pre><code>&lt;for limit="4" param="index"&gt;
  </code></pre>