Facebook sdk FB.Feed Don't execute the Callback.

Hi.

Why the callback in FB.Feed is not being called? is it normal? Im using last facebook sdk version.

Thank you.

public class Feed : MonoBehaviour { #region FB.Init() example

 private bool isInit = false;

 private void CallFBInit()
 {
     FB.Init(OnInitComplete, OnHideUnity);
 }

 private void OnInitComplete()
 {
     Debug.Log("FB.Init completed");
     isInit = true;
     CallGetAuthResponse();
 }

 private void OnHideUnity(bool isGameShown)
 {
     Debug.Log("Is game showing? " + isGameShown);
 }

 #endregion
 
 #region FB.Login() example

 private void CallFBLogin()
 {
     FB.Login("email,publish_actions,user_about_me", Callback);
 }

 #endregion
 
 #region FB.GetAuthResponse() example

 private void CallGetAuthResponse()
 {
     FB.GetAuthResponse(Callback);
 }

 #endregion
 
 #region FB.Feed() example

 public string FeedToId = "";
 public string FeedLink = "";
 public string FeedLinkName = "";
 public string FeedLinkCaption = "";
 public string FeedLinkDescription = "";
 public string FeedPicture = "";
 public string FeedMediaSource = "";
 public string FeedActionName = "";
 public string FeedActionLink = "";
 public string FeedReference = "";
 public bool IncludeFeedProperties = false;
 private Dictionary<string, string[]> FeedProperties = new Dictionary<string, string[]>();

 private void CallFBFeed()
 {
     Dictionary<string, string[]> feedProperties = null;
     if (IncludeFeedProperties)
     {
         feedProperties = FeedProperties;
     }
     FB.Feed(
         toId: FeedToId,
         link: FeedLink,
         linkName: FeedLinkName,
         linkCaption: FeedLinkCaption,
         linkDescription: FeedLinkDescription,
         picture: FeedPicture,
         mediaSource: FeedMediaSource,
         actionName: FeedActionName,
         actionLink: FeedActionLink,
         reference: FeedReference,
         properties: feedProperties,
         callback: delegate(FBResult result) { consoleLog = "feeed calleed"; }
     );
 }

 #endregion
 
 private string consoleLog;
 
 void OnGUI()
 {
     GUI.Label(new Rect(0,0,Screen.width,70), consoleLog);
     
     if(GUI.Button (new Rect(0,Screen.height-100,100,100), "Init"))
     {
         CallFBInit();
     }
     
     if(GUI.Button (new Rect(100,Screen.height-100,100,100), "Login"))
     {
         CallFBLogin();
     }
     
     if(GUI.Button (new Rect(200,Screen.height-100,100,100), "Feed"))
     {
         CallFBFeed();
     }        
 }
 
 void Callback(FBResult result)
 {
     consoleLog = result.Text;
 }

}