How to make a FocusState on WatchOS

Hey guys,

I'm creating a fitness app on WatchOS and I need to realize a focus on a variable but it doesn't work.

I will show you my code to understand the problem :

@State var WeightChoose: Double = 0.0
@FocusState private var isWeightActive: Bool

var body: some View {
        HStack {
            Text("Poids:")
            Spacer()
            Text("\(String(format: "%.0f", WeightChoose)) KG")
            .focused($isWeightActive)
            .foregroundColor(isWeightActive ? .green : .white)
            
                .digitalCrownRotation($WeightChoose, from: 0.0, through: 300.0, by: 1.0, sensitivity: .medium)
                .animation(.easeIn(duration: 1), value: WeightChoose)
    .padding()

Here my code don't show me any error but the focus doesn't work at all.

Before, I used the old way to focus with

@State private var isWeightActive = false

instead of @FocusState

and

.focusable(true) { focused in
                 isWeightActive = focused
                 }

Instead of .focused()

But now the .focusable() method is depreciated since watchOS 8 and we have to go on FocusState and .focused but it doesn't work for my code.

If you could help me with that it would be awesome.

Thank you

Cyrille