   func tableView(tableView: ASTableView!, nodeForRowAtIndexPath indexPath: NSIndexPath!) -> ASCellNode! {
     let patter = NSString(format: "[%ld.%ld] says hello!", indexPath.section, indexPath.row)
     let node = ASTextCellNode()
-    node.text = patter
+    node.text = patter as String
 
     return node
   }


  // MARK: UIViewController.

  required override init() {
    self.tableView = ASTableView()

    super.init(nibName: nil, bundle: nil)

  }

  required init(coder aDecoder: NSCoder) {
    fatalError("storyboards are incompatible with truth and beauty")
  }

  override func viewDidLoad() {
