title: Cannot assign a value of type 'String' to type 'UIImage'
body: <p>This is my code please help, I'm following a tutorial but i can't figure out whats wrong. please help.</p>
  
  <p>i'm trying to make if the image selected, then perform segue to another view controller and display the image which had been selected before</p>
  
  <pre><code> override func collectionView(collectionView: UICollectionView, didSelectItemAtIndexPath indexPath: NSIndexPath)
  {
      self.performSegueWithIdentifier("showImage", sender: self)
  }
  
  override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?)
  {
      if segue.identifier == "showImage"
      {
          let indexPaths = self.collectionView!.indexPathsForSelectedItems()!
          let indexPath = indexPaths[0] as NSIndexPath
          let vc = segue.destinationViewController as! SecondViewController
          vc.image = self.url[indexPath.row] //Error Cannot Assign a value of type 'String' to type 'UIImage'
      }
  }
  </code></pre>
  
  <p>I would be thankful for help.</p>