NSLayoutConstraint's outputs are always zero, while others

Question

I create a store through xib:

let cShop = UINib(nibName: "connectedShop", bundle: nil).instantiateWithOwner(nil, options: nil)[0] as! connectedShop

This store has assigned this custom class:

    import Foundation
import UIKit
class connectedShop : UIView{

    @IBOutlet weak var bannerViewHight: NSLayoutConstraint!

    @IBOutlet weak var bannerViewTop: NSLayoutConstraint!
    @IBOutlet weak var bannerViewLeft: NSLayoutConstraint!
    @IBOutlet weak var bannerViewRight: NSLayoutConstraint!

    @IBOutlet weak var banerDiscount: UIImageView!
    @IBOutlet weak var bannerImageShop: UIImageView!
    @IBOutlet weak var bannerTitle: UILabel!
    @IBOutlet weak var bannerDescription: UILabel!
    @IBOutlet weak var bannerButton: UIButton!

    @IBAction func bannerButtonAction(sender: UIButton) {

    }

    required init(coder aDecoder: NSCoder) {
        super.init(coder: aDecoder)!
    }
}

And from the code, I call this store as follows:

let cShop = UINib(nibName: "connectedShop", bundle: nil).instantiateWithOwner(nil, options: nil)[0] as! connectedShop


cShop.bannerTitle.text = "shopTitle"  //work


shopContainer.addSubview(cShop)

cShop.bannerViewLeft.constant = 0  //make my app crash
cShop.bannerViewRight.constant = 0 // "
cShop.bannerViewTop.constant = 0  //  "

When I set the property bannerTitle.text, my application continues and debugs, I see that this socket is initialized, but there are no restrictions, and when the compiler is on the line that assigns a constant, it always causes the same error:

fatal error: unexpectedly found nil while unwrapping an Optional value

debugging I saw that there is one output that is initialized:

Does anyone know why this might happen?

These are my connections:

Answer 1

. .

Answer 2

.

@IBOutlet weak var bannerViewHight: NSLayoutConstraint!

@IBOutlet var bannerViewHight: NSLayoutConstraint!

.