title: Facebook Graph API event-id/comments?since=2014-02-01&until=2014-02-10 , Date filter has no effect
body: <ol>
  <li>I am trying to bring comments made on a particular event by targeting this URL: <code>https://graph.facebook.com/1466384840257158/comments</code></li>
  <li>I am passing the user_access_token  </li>
  <li>I have two comments at present on this event made on the same
  day(2014-03-29)</li>
  <li>Now I try to pass a date which should bring an empty data result/object
  like this: <code>https://graph.facebook.com/1466384840257158/comments?since=2011-01-01&amp;until=2014-01-10</code></li>
  <li>This request has no effect, it still shows me the two comment made
  on the 29th</li>
  <li>I have tried the same kind of date range on my user-id/feed and it
  gave me an empty data object.</li>
  <li>Finally i tried event-id/feed (before trying date filter) and it
  gave me the following error</li>
  </ol>
  
  <p>.</p>
  
  <pre><code>{
      "error": {
          "message": "An unexpected error has occurred. Please retry your request later.", 
          "type": "OAuthException", 
          "code": 2
      }
  }
  </code></pre>
  
  <p>Could you please guide me about date filter on that particular query (point4) or if you have any other idea to use date filter on comments made for an event. </p>