title: How to post on friend wall using Graph Api in iPhone
body: <p>i am implementing a facebook application , i have used Graph Api and have successfully logged into facebook and got the friend list with the id in UITableView, now i have one string, how should i post on friend wall, Suppose if i click on any of my friend in UITableView, a message should be post,plz help me</p>
  
  <p>EDIT: Code</p>
  
  <pre><code>NSString *urlString = [NSString stringWithFormat:@"graph.facebook.com/%@/feed",key];
  NSURL *url = [NSURL URLWithString:urlString];
  ASIFormDataRequest *newRequest = [ASIFormDataRequest requestWithURL:url];
  
  [newRequest setPostValue:@"I'm inviting you to see download the OGC app" forKey:@"message"];
  [newRequest setPostValue:fbGraph forKey:@"access_token"];
  [newRequest setDidFinishSelector:@selector(postToWallFinished:)];
  [newRequest setDelegate:self];
  [newRequest startAsynchronous]; 
  </code></pre>
  
  <p>i am implementing this in function when clicked on tableview where key is id number for the friends name clicked in and in other function</p>
  
  <pre><code>NSString *responseString = [request responseString];
  NSMutableDictionary *responseJSON = [responseString JSONValue];
  NSString *postId = [responseJSON objectForKey:@"id"];
  NSLog(@"Post id is: %@", postId); 
  </code></pre>
  
  <p>but i am getting the post id nil plz help me</p>