title: Cannot assign a value of type '(UInt32)' to a value of type 'String?'
body: <p>I'm fairly new to iOS programming and I'm trying to randomize between two numbers in Xcode using Swift and I get this error:</p>
  
  <blockquote>
    <p>Cannot assign a value of type <code>(UInt32)</code> to a value of type <code>String</code></p>
  </blockquote>
  
  <p>When I use the <code>print</code> method, it works fine but when I assign a label to print out the result it gives me that error.</p>
  
  <p>Code:</p>
  
  <pre><code>let lower : UInt32 = 10
  let upper : UInt32 = 19
  let randomNumber = arc4random_uniform(upper - lower) + lower
  lblNum.text = (randomNumber)
  </code></pre>