title: Add the value of multiple sliders in swift then average them?
body: <p>Im doing this wrong I but I'm not sure how to get it I could really use some help. I have 3 sliders (I may need more later) and basically they are 1-10 in value kinda for a rating system and i want them averaged to create an average score.. so this is what I have</p>
  
  <pre><code>@IBOutlet weak var speed: UISlider!
  @IBAction func speedChange(sender: AnyObject) {
  let speedValue = speed.value
  }
  
  
  @IBOutlet weak var body: UISlider!
  @IBAction func bodyChange(sender: AnyObject) {
  let bodyValue = body.value
  }
  
  
  @IBOutlet weak var details: UISlider!
  @IBAction func detailsChange(sender: AnyObject) {
  let detailsValue = details.value
  }
  
  
  @IBOutlet weak var score: UILabel!
  
  func final() {
  
  var thescore = (speed.value + body.value + details.value) / 3    
  score.text = "\(thescore)"
  
  }
  </code></pre>
  
  <p>Only problem is it doesn't work. the + errors out, so I need to fix that, but even still i think my methodology is completely off. </p>