Swift condition for the button

[irl]

I have a file.

import SpriteKit
class GameScene: SKScene, SKPhysicsContactDelegate {

var RestartBa : UIButton!

var RestartB : UIButton!

internal var ScoreL = UILabel()
internal var Score: NSInteger = 0 //передача внешней переменной
override func didMoveToView(view: SKView) {
ScoreL.text = "(Score)"

ScoreL = UILabel(frame: CGRect(x: 5, y: 0, width: 100, height: 20))

ScoreL.backgroundColor = UIColor.whiteColor()

ScoreL.textColor = UIColor.redColor()

self.view?.addSubview(ScoreL)
if (Score == 2) {

self.view?.addSubview(RestartB)

}
scene?.backgroundColor = UIColor.blueColor()

physicsWorld.contactDelegate = self

self.scene?.size = CGSize(width: 640, height: 1136)

// self.scene?.size = CGSize(width: self.frame.size.width, height: self.frame.size.height)
RestartBa = UIButton(frame: CGRect(x: 0, y: 0, width: view.frame.size.width / 3, height: 30))

RestartBa.center = CGPointMake(view.frame.size.width / 2, view.frame.size.width / 3)

RestartBa.setTitle("1 Уровень", forState: UIControlState.Normal)

RestartBa.setTitleColor(UIColor.blackColor(), forState: UIControlState.Normal)

RestartBa.addTarget(self, action: Selector("Res"), forControlEvents: UIControlEvents.TouchUpInside)

self.view?.addSubview(RestartBa)
RestartB = UIButton(frame: CGRect(x: 0, y: 0, width: view.frame.size.width / 3, height: 30))

RestartB.center = CGPointMake(view.frame.size.width / 2, view.frame.size.width / 2)

RestartB.setTitle("2 Уровень", forState: UIControlState.Normal)

RestartB.setTitleColor(UIColor.blackColor(), forState: UIControlState.Normal)

RestartB.addTarget(self, action: Selector("Rest"), forControlEvents: UIControlEvents.TouchUpInside)
}
func Res(){
self.view?.presentScene(Start(), transition: SKTransition.flipHorizontalWithDuration(0.3))
let scene = Start(fileNamed: "GameScene")!

scene.scaleMode = .AspectFill

self.view?.presentScene(scene, transition: SKTransition.flipHorizontalWithDuration(0.3))
RestartBa.removeFromSuperview()

RestartB.removeFromSuperview()

}
func Rest(){
self.view?.presentScene(copyGameScene(), transition: SKTransition.flipHorizontalWithDuration(0.3))
let scene = copyGameScene(fileNamed: "GameScene")!

scene.scaleMode = .AspectFill

self.view?.presentScene(scene, transition: SKTransition.flipHorizontalWithDuration(0.3))
RestartBa.removeFromSuperview()

RestartB.removeFromSuperview()

}
}

22:00:35 

Subject if (Score == 2) {
self.view?.addSubview(RestartB)
} I'm supposed to have a button, but there's a thread 1 exc_bad_instruction on this line.
Thank you.

[authera]

Score is transferred before ScoreL is established. After the establishment:

ScoreL = UILabel(frame: CGRect(x: 5, y: 0, width: 100, height: 20))
ScoreL.text = "\(Score)"
ScoreL.backgroundColor = UIColor.whiteColor()
ScoreL.textColor = UIColor.redColor()
self.view?.addSubview(ScoreL)

At the time you're trying to add RestartB, it doesn't exist yet.

RestartB = UIButton(frame: CGRect(x: 0, y: 0, width: view.frame.size.width / 3, height: 30))
RestartB.center = CGPointMake(view.frame.size.width / 2, view.frame.size.width / 2)
RestartB.setTitle("2 Уровень", forState: UIControlState.Normal)
RestartB.setTitleColor(UIColor.blackColor(), forState: UIControlState.Normal)
RestartB.addTarget(self, action: Selector("Rest"), forControlEvents: UIControlEvents.TouchUpInside)
if (Score == 2) {

self.view?.addSubview(RestartB)

}

It's a small letter.