   var lemonsToMix = 0
   var iceCubesToMix = 0
   
+  let outOfMoney = "You don't have enough money"
+  
   override func viewDidLoad() {
     super.viewDidLoad()
     // Do any additional setup after loading the view, typically from a nib.

  
  @IBAction func lemonPurchaseValueChanged(sender: UIStepper) {
    if lemonsToPurchase > Int(lemonPurchaseStepper.value) {
      //println("subtracting")
      supplies.money += price.lemon
      supplies.lemons -= 1
    }
    else {
      //println("adding")
      if supplies.money >= price.lemon {
        supplies.money -= price.lemon
        supplies.lemons += 1
        
      } else {
        // Do this "else" check after updateMainView?
        lemonPurchaseStepper.value -= 1
        lemonPurchaseStepper.maximumValue = lemonPurchaseStepper.value
        //showAlertWithText(message:"You don't have enough money")
      }
    }
    

  }
  
  @IBAction func iceCubePurchaseValueChanged(sender: UIStepper) {
    if iceCubesToPurchase > Int(iceCubePurchaseStepper.value) {
      supplies.money += price.ice
      supplies.iceCubes -= 1
    }
    else {
      if supplies.money >= price.ice {
        supplies.money -= price.ice
        supplies.iceCubes += 1
      } else {
        iceCubePurchaseStepper.value -= 1
        //iceCubePurchaseStepper.maximumValue = iceCubePurchaseStepper.value
        showAlertWithText(message: outOfMoney)
      }
    }
    
    iceCubesToPurchase = Int(iceCubePurchaseStepper.value)
    updateMainView()
  }
