title: Facebook graph api - not able to get other user activity data done on my post
body: <p>I am using developer.facebook.com to access certain data via graph api from my facebook page which i have created. Example comments like reactions. 
  get/v6.0/me?fields=id,name,posts{comments,reactions}</p>
  
  <pre><code>"id": "1234",
  "name": "XXXX",
  "posts": {
  "data": [
    {
      "id": "1234_4567",
      "reactions": {
        "data": [
          {
            "id": "1234",
            "name": "XXXX",
            "type": "HAHA"
          }
  </code></pre>
  
  <p>Though i am getting all the information in jason,  only which i have posted , reacted or commented, but i am not able to get any jason output for activity done by any other users.
  My friend also reacted and commented on same post but i am not able to get his activity. </p>
  
  <p>2) I am also trying to get likes on the post and getting below error
  get/v6.0/me?fields=id,name,posts{likes}</p>
  
  <pre><code>"message": "(#100) Tried accessing nonexisting field (likes) on node type (Post)",
  "type": "OAuthException",
  "code": 100,
  "fbtrace_id": "AF8RQ88df6ohfXHWNHBzLKB"
  </code></pre>
  
  <p>Any help would be highly appreciated.</p>