How to set variable inside a xib / NIB in swift - swift

Question

cannot modify value for a variable in my XIB class. How can I set variable from the didLoad of ViewController the value of var orientation ? I only get printed always the initial default value I set in the class .none
in my VC
override func viewDidLoad() {
super.viewDidLoad()
self.myTestCustomView.orientation = .square
}
my class
enum Orientation: String, CaseIterable {
case none
case horizontalRectangle, verticalRectangle, square
}
class CustomView : UIView {
#IBOutlet private var contentView:UIView?
// other outlets
private var _orientation: Orientation = .none
var orientation: Orientation {
set { _orientation = newValue }
get {return _orientation}
}
override init(frame: CGRect) { // for using CustomView in code
super.init(frame: frame)
self.commonInit()
}
required init?(coder aDecoder: NSCoder) { // for using CustomView in IB
super.init(coder: aDecoder)
self.commonInit()
}
private func commonInit() {
Bundle.main.loadNibNamed("CustomView", owner: self, options: nil)
guard let content = contentView else { return }
content.frame = self.bounds
content.autoresizingMask = [.flexibleHeight, .flexibleWidth]
self.addSubview(content)
print("checkValue\(_orientation.rawValue)")
self.setNeedsLayout()
}
}
EDIT:
my solution, removed _orientation, accessing from VC directly to orientation. any advice or comment welcomed.
var orientation: Orientation {
set {
switch newValue {
case .horizontalRectangle:
self.contentView.layer.cornerRadius = self.frame.height / 5.0 //height since is orizzontal rectangle
case .verticalRectangle:
self.contentView.layer.cornerRadius = self.frame.width / 5.0
case.square:
self.contentView.layer.cornerRadius = self.frame.width / 5.0
case .none:
self.contentView.layer.cornerRadius = 0.0
}
self.setNeedsLayout()
}
get {return self.orientation}
}