Hi having problems with onappear and ondisappear. Just want to get get these closures to work to print out a statement in my console and no luck. I’m not sure if having a function is the problem. Any suggestions are appreciated. Here is my code:

import SwiftUI

var stopWatch = Stopwatch()

struct Introduction: View {
    // @Environment(Stopwatch.self) var stopWatch
    var body: some View {
        
        NavigationStack {
            VStack {
                
                
                NavigationLink(destination: FactFinding(), label: { Text("Next Step") })
                                                  
        Button("Start"){stopWatch.start()}
        .buttonStyle(.borderedProminent)
        Button("Stop"){stopWatch.elapsedTime()}
        .buttonStyle(.borderedProminent)
        .padding()
             
            }
            
            .onAppear //tried this with onDisappear as well { 
                           print("Introduction appeared!")
                       }
           }
             
        }
       
    }