title: How to comment to a photo using facebook c# sdk
body: <p>I'm success to commented to facebook post using format: </p>
  
  <pre><code>fb.Post("owner_id" + "_" + "post_id" + "/comments", message). 
  </code></pre>
  
  <p>But using for a facebook photo (example: <a href="https://www.facebook.com/photo.php?fbid=423909524319194" rel="nofollow">this</a>)</p>
  
  <pre><code>fb.Post("362298920480255_423909524319194/comments",message);
  </code></pre>
  
  <p>I got this error: <code>#100 : error finding the requested story.</code></p>
  
  <p>How can i fix this?</p>
  
  <p>Im using .Net 4.0 and Facebook c# sdk v6.</p>