title: Facebook publish api parameters, some of them don't seem work
body: <p>I'm trying to build a FB app which has a function of publishing post with picture to news feed. </p>
  
  <p>I am able to do that via FB's graph api according to FB's developer document,</p>
  
  <pre><code>https://graph.facebook.com/PROFILE_ID/feed
  </code></pre>
  
  <p>with the parameters such as <code>message, picture, link, name, caption</code>. These are parameters listed in <a href="https://developers.facebook.com/docs/reference/api/" rel="nofollow">FB's doc</a>. I assumed that these parameters are only for the POST requests.</p>
  
  <p>For <a href="https://developers.facebook.com/docs/reference/api/post/" rel="nofollow">posts in FB</a>, we can find more parameters. I assumed they are only for the GET requests. </p>
  
  <p>However, when I tested all these parameters, I found that I am able to add <code>actions</code> to my POST requests and get customized actions. When I try to add <code>message_tags, from, to</code>, these parameters don't work in POST requests. </p>
  
  <p>So, I get confused. Is my assumption correct? Or I did something wrong. </p>
  
  <p>BTW, when I send requests with these parameters, no error message returns. Posts are published to news feed, but no <code>message_tags, from, to</code>. </p>