I am using FBSDK in my Swift iOS application and currently I am trying to retrieve the **list of friends who also use my app.** I have two-three people who should show up but whenever I search the graphrequest result for friends it returns nil..

```
let graphRequest : FBSDKGraphRequest = FBSDKGraphRequest(graphPath: "me",     parameters: nil)
        graphRequest.startWithCompletionHandler({ (connection,     result:AnyObject!, error) -> Void in

            if ((error) != nil)
            {
                // Process error
                println("Error: \(error)")
            }
            else
            {
                //get Facebook ID
                let faceBookID: NSString = result.valueForKey("id") as NSString
                //get username
                let userName : NSString = result.valueForKey("name") as NSString
                //get facebook friends who use app
                let friendlist: AnyObject = result.valueForKey("friends") as AnyObject

            }

```

I have the "email", "user\_friends", and "public\_profile" permissions which should be enough to retrieve this information. Any Ideas on what I am doing wrong?? this is doing my head in as my friend doing an android version has successfully got his working..