RollViewController

import UIKit

class RollViewController: UIViewController {

	func randomDiceValue() -> Int {
		let randomValue = 1 + arc4random() % 6

		return Int(randomValue)
	}

	@IBAction func rollTheDice(){

		var controller:DiceViewController
		controller = self.storyboard?.instantiateViewControllerWithIdentifier("DiceViewController") as!
		DiceViewController

		controller.firstValue = self.randomDiceValue()
		controller.secondValue = self.randomDiceValue()

		self.presentViewController(controller, animated: true, completion: nil)
	}
}