   }
   
   @IBAction func valueDidChange(sender: UITextField) {
+    valueTextField.attributedPlaceholder = NSAttributedString(string: "value", attributes: [
+      NSForegroundColorAttributeName: UIColor.lightGrayColor()
+    ])
     let text = sender.text ?? ""
     let value: AnyObject?
     switch property.type {

    
    if value == nil {
      valueTextField.text = ""
      valueTextField.placeholder = "nil"
    }
  }
  

    valueTextField.enabled = true
    valueTextField.hidden = false
    valueTextField.textColor = .blackColor()
    valueTextField.attributedPlaceholder = NSAttributedString(string: "value", attributes: [
      NSForegroundColorAttributeName: UIColor.lightGrayColor()
    ])

    valueSwitch.enabled = true
    valueSwitch.hidden = true
    
