@propertywrapper in SwiftUI

Hello

I created a @propertyWrapper to limit the number a variable can reach. I tried it in a SwiftUI view with a button that increases the value of the variable and it works, the variable stops at the maximum number set in the initializer. However if I try it with a Textflied it doesn't work, if I insert a higher number than the one set nothing happens, it makes me do it. How can I solve this problem, I know the problem has to do with Binding but I don't know exactly what it is, here is the code:

import SwiftUI

struct ContentView: View {
    
    @Maximum(maximum: 12) var quantity: Int
    
    var body: some View {
        NavigationView{
            Form{
                TextField("", value: $quantity, format: .number, prompt: Text("Pizza").foregroundColor(.red))
                
                Button {
                    quantity += 1
                } label: {
                    Text("\(quantity)")
                }
            }
        }
    }
}

@propertyWrapper
struct Maximum<T: Comparable> where T: Numeric {
    @State private var number: T = 0

    var max: T

    var wrappedValue: T {
        get { number }
        nonmutating set { number = min(newValue, max) }
    }
    
    var projectedValue: Binding<T> {
        Binding(
            get: { wrappedValue },
            set: { wrappedValue = $0 }
        )
    }
    
    init(maximum: T){
        max = maximum
    }
}

extension Maximum: DynamicProperty {
    
}

Thank You for your time