Passing data without using storyboard or identifiers swift 3 - ios

Question

I have created a textField in my main viewcontroller and want to pass data to another VC. I have created all of my UI programmatically, with out storyboard.
I tried passing data inside of a action I added to a button by doing the following:
let destination = InsuranceInformationViewController()
destination.customerNameLabel = customerNameTextField.text
But this does not work for me. Any help is appreciated, thanks in advance.
UPDATE
` //CustomerInformationViewController
override func viewDidLoad() {
super.viewDidLoad()
view.addSubView(customernameTextField)
view.addSubView(continueButton)
view.backgroundColor = UIColor.white
}
let customerNameTextField: UITextField = {
let textField = UITextField()
textField.placeHolderText = "First, Last"
textField.borderStyle = UITextBorderStyle.RoundedRect
textField.translatesAutoresizingMaskIntoConstraints = false
return textField
}()
let continueButton: UIButton = {
let button = UIButton(type: .system)
button.backgroundColor = UIColor.blue
button.setTitle("Continue", for: .normal)
button.translatesAutoresizingMaskIntoConstraints = false
button.setTitleColor(.white, for: .normal)
button.addTarget(self, action:#selector(CustomerInformationViewController ().continueOn), for: .touchUpInside)
return button
}()
#objc func continueOn (){
let destination = InsuranceInformationViewController()
destination.customerNameLabel = customerNameTextField.text
self.navigationController?.pushViewController(InsuranceViewController(), animated: true)
}
//InsuranceViewController
override func viewDidLoad() {
super.viewDidLoad()
view.addSubView(customerNameLabel)
view.backgroundColor = UIColor.white
}
let customerNameLabel: UILabel = {
let label = UILabel()
label.text = "Name"
label.translatesAutoresizingMaskIntoConstraints = false
return label
}()
`

Answer 1

When you define destination let destination = InsuranceInformationViewController(), you are creating a new instance of InsuranceInformationViewController.
However in doing this, when you are referring to that instance, anything you try to change will not appear to work because it is not the already-instantiated view controller that you see in your view.
Instead you should do something like this:
let destination = storyboard?.instantiateViewController(withIdentifier: "YOUR_STORYBOARD_ID") as! InsuranceInformationViewController
destination.customerNameLabel = customerNameTextField.text
Hope this works