IPhone : Chek just updated photo permission on Facebook

I'm using this code to upload a photo on the Facebook user wall but the result dictionary return to me only photoid and postid, i need to know the permission level of the post that i have just share (during sharing process in native app the user can select Public,friends,only me...), There a way to know this permission?

NSMutableDictionary* params = [NSMutableDictionary dictionaryWithObjectsAndKeys:@"",  @"message", nil];
 [params setObject:Picture forKey:@"source"];


[FBRequestConnection startWithGraphPath:@"me/photos"
                            parameters:params
                            HTTPMethod:@"POST"
                     completionHandler:^(FBRequestConnection *connection,
                                         id result,
                                         NSError *error)
{
   if (error)
   {
      //showing an alert for failure


   }
   else
   {
      //showing an alert for success



      NSString *phoId=[NSString stringWithFormat:@"%@",[result valueForKey:@"id"]];
      NSString *PostId=[NSString stringWithFormat:@"%@",[result valueForKey:@"post_id"]];





   }

}];