title: How should I get variable in label in Swift?
body: <p>I'm new to Swift, so I made a new iOS project. I have declared a variable and placed a content into it. Also I have created <code>IBOutlet</code> for label and I tried to get a variable in my label. Swift compiler said: <code>'UInt32' is not convertible to 'String'</code>.</p>
  
  <p>What's wrong with my code?</p>
  
  <pre><code>class ViewController: UIViewController {
      @IBOutlet var Mark : UILabel
  
      @IBAction func Rate(sender : UIButton) {
          var chibotar = arc4random_uniform(6)
          Mark.text = chibotar // error on this line
      }
  </code></pre>