如何在swiftui中实现结构视图到类ObservableObject的var

import SwiftUI
import Combine

class MyDataModel: ObservableObject {
    @Published var myVariable: String = ""
}

struct MyView: View {
    @ObservedObject var dataModel = MyDataModel()
    
    var body: some View {
        VStack {
            Text(dataModel.myVariable)
            Button(action: {
                self.dataModel.myVariable = "Updated Value"
            }) {
                Text("Update")
            }
        }
    }
}

@main
struct MyApp: App {
    var body: some Scene {
        WindowGroup {
            MyView()
        }
    }
}