title: Convert integer value to string using JSTL/EL
body: <p>How do I correct this statement:</p>
  
  <pre><code>${model.myHashtable[model.data.id]}.
  </code></pre>
  
  <p>myHashtable is defined as</p>
  
  <pre><code>Hashtable&lt;String, String&gt;
  </code></pre>
  
  <p>But, <code>${model.data.id}</code> returns an <code>int</code>.</p>
  
  <p>I tried to do something like</p>
  
  <pre><code>${model.myHashtable['model.data.id']}
  </code></pre>
  
  <p>But it does not work. Any other ideas, aside from changing the type of <code>id</code> to <code>String</code>?</p>