swift – Why is the alert not exhibiting up on my IOS Software after clicking the button?

Type {
                // Title
                TextField("Title", textual content: $viewModel.title).textFieldStyle(DefaultTextFieldStyle())
                
                //DAte
                DatePicker("Due Date", choice: $viewModel.dueDate)
                    .datePickerStyle(CompactDatePickerStyle()).padding(.all, 10)
                
                //Button
                TLButton(textual content: "Add to Do") {
                    if (viewModel.canSave) {
                        viewModel.save()
                        newItemPresented = false;
                    } else {
                        viewModel.showAlert = true
                        print(viewModel.showAlert)
                    }
                }
            }
            .alert(isPresented: $viewModel.showAlert) {
                Alert(title: Textual content("Error"),
                      message:  Textual content("Enter Accurately")
                )
            }

I’m making an attempt to make an alert popup when the end-user provides incorrect particulars on the shape, which is validated by an exterior class.

I’ve declared the involved variables within the exterior class as follows

@Printed var title = ""
@Printed var dueDate = Date()
@Printed var showAlert = false

I’m additionally attaching all related features (for my part) to the scope of this drawback:

var canSave: Bool {
        guard !title.trimmingCharacters(in: .whitespaces).isEmpty else {
            return false;
        }
        
        guard dueDate >= Date().addingTimeInterval(-86400) else {
            return false;
        }
        
        return true
    }

My TLButton Class:

import SwiftUI

struct TLButton: View {
    let textual content: String
    let motion: ()  -> Void
    var physique: some View {
        Button {
            //Try log in
            motion()
        } label: {
            ZStack {
                RoundedRectangle(cornerRadius: 10).foregroundColor(.blue)
                Textual content(textual content).foregroundColor(.white)
            }
        }.padding(.backside, 5)
    }
}

#Preview {
    TLButton(textual content: "Foo") {
        // motion
    }
}

i attempted printing the worth of viewModel.showAlert to see if it updates it to true, when it’s initially set to false. It does replace it, nevertheless, the alert doesn’t come. I count on the Alert to pop up with the related picture.