Dark and light not switching with segmented control (Swift) - swift

Question

Well I'm trying to make a light and dark theme for a cookie clicker with segmented index but when i switch nothing happens and im really confused if anyone could help me i would really appreciate it.
Ive tried changing else if. Removing code just trying print statements in it its ad if the function
//
// ViewController.swift
// clicker
///Users/ishaanrao/Desktop/Swift/clicker/clicker/Base.lproj/Main.storyboard
// Created by Ishaan Rao on 8/1/19.
// Copyright © 2019 Ishaan Rao. All rights reserved.
//
import UIKit
class ViewController: UIViewController {
//Properties
var x: Int = 0
#IBOutlet weak var selector: UISegmentedControl!
#IBOutlet weak var resetbtn: UIButton!
#IBOutlet weak var score: UILabel!
#IBOutlet var back: UIView!
//viewDidLoad
override func viewDidLoad() {
super.viewDidLoad()
resetbtn.backgroundColor = UIColor.black
resetbtn.setTitle("Reset", for: .normal)
resetbtn.setTitleColor(.white, for: .normal)
resetbtn.layer.masksToBounds = true
resetbtn.layer.cornerRadius = 5
score.backgroundColor = UIColor.blue
score.layer.masksToBounds = true
score.layer.cornerRadius = 5
score.textColor = UIColor.white
score.textAlignment = .center
// Do any additional setup after loading the view.
}
//methods
#IBAction func cookie(_ sender: Any) {
x += 1
score.text = "Score: \(x)"
}
#IBAction func reset(_ sender: Any) {
x = 0
score.text = "Score: \(x)"
}
#IBAction func darl(_ sender: Any, forEvent event: UIEvent) {
}
#IBAction func light(_ sender: Any) {
if selector.selectedSegmentIndex==0 {
resetbtn.backgroundColor = UIColor.black
resetbtn.setTitle("Reset", for: .normal)
resetbtn.setTitleColor(.white, for: .normal)
resetbtn.layer.masksToBounds = true
resetbtn.layer.cornerRadius = 5
score.backgroundColor = UIColor.blue
score.layer.masksToBounds = true
score.layer.cornerRadius = 5
score.textColor = UIColor.white
score.textAlignment = .center
} else if selector.selectedSegmentIndex==1 {
back.backgroundColor = .black
resetbtn.backgroundColor = UIColor.white
resetbtn.setTitle("Reset", for: .normal)
resetbtn.setTitleColor(.black, for: .normal)
resetbtn.layer.masksToBounds = true
resetbtn.layer.cornerRadius = 5
score.backgroundColor = UIColor.orange
score.layer.masksToBounds = true
score.layer.cornerRadius = 5
score.textColor = UIColor.black
score.textAlignment = .center
}
}
}
I want it to change colors but its not there are no errors

Answer 1

It appears that the IBAction just isn't linked to the button event. Try to link the Storyboard button TouchUpInside event to the action like this:
For more info, you can follow the Oficial Apple documentation