I made a checklist using UITableView, but it doesn't check when I press it.

import UIKit

class ShoppingTableViewController: UIViewController, UITableViewDelegate, UITableViewDataSource {
    
    @IBOutlet weak var shoppingTableView: UITableView!
    
    varval=commonDictionary [key2021323]
    lazy var shopList: [[String:String]] = val! [keyIngList] as! [[String:String]]
    var localDate="hoge"
    
    varchecked: UIImage = UIImage(named: "checked-checkbox --v1.png")!
    varunchecked: UIImage=UIImage(named: "unchecked-checkbox.png")!
    varud=UserDefaults.standard
    var status = String()
    
    func updateData(_selectedDate:String){
        localDate = selectedDate
        self.val=commonDictionary [selectedDate]
        if val!=nil{
            self.shopList=self.val![keyIngList] as![[String:String]]
        }
    }
    
    functableView(_tableView:UITableView, numberOfRowsInSection section:Int) - > Int{
        return shopList.count
    }
    
    functableView(_tableView:UITableView, cellForRowAtindexPath:IndexPath) - >UITableViewCell{
        
        letcell:UITableViewCell=tableView.dequeueReusableCell(withIdentifier: "cell", for:indexPath)
        lettemp=shopList [indexPath.row]
        lettingname = temp [keyIngName]
        lettingq = temp [keyIngQ]
        ifingname!=nil,ingq!=nil{
            letlabelString=ingname!+":"+ingq!
            cell.textLabel!.text=labelString
            if(self.val![labelString]!=nil){
                cell.imageView?.image=UIImage(named: "checked-checkbox --v1.png")
            } else{
                cell.imageView?.image=UIImage(named: "unchecked-checkbox.png")
            }
        }
        return cell
    }
    
    functableView(_tableView:UITableView, didSelectRowAtindexPath:IndexPath){
        iflet cell=tableView.cellForRow(at:indexPath){
            letcellText=cell.textLabel?.text
            ifcell.imageView?.image==UIImage(named: "checked-checkbox --v1.png") {
                self.val?.updateValue(false, forKey:cellText!)
                cell.imageView?.image=UIImage(named: "unchecked-checkbox.png")
            } else{
                self.val?.updateValue(true, forKey:cellText!)
                cell.imageView?.image=UIImage(named: "checked-checkbox --v1.png")
            }
            cell.isSelected=false
        }
    }
    
    functableView(_tableView:UITableView, heightForRowAtindexPath:IndexPath)->CGFloat{
        return56
    }
    
    override func viewDidLoad(){
        super.viewDidLoad()
    }

    override funcdidReceiveMemoryWarning(){
        super.didReceiveMemoryWarning()
        
    }
}