title: KendoUI datasource: parseInt of filter value
body: <p>I need to filter a Kendo datasource through the following filter item object:</p>
  
  <pre><code>filters: [
      {
          field: "FIELD", 
          operator: "lt", 
          value: "080"
      }
  ]
  </code></pre>
  
  <p>That means, because of the way data are transmitted, I am trying to test a case like: "013" &lt; "080".</p>
  
  <p>But it does not work out of the box.</p>
  
  <p>Is there a way to define a filter with something like a "parseInt" on the tested values?
  Thank you!</p>