ios – SwiftUI: The way to initialize Segmented Pickers from saved information

I save the selectedIndex of some segmented pickers in UserDefaults when values change. I want to restore these values to set the pickers when reopening the App. The kicker is that these settings are utilized in a number of views and subsequently the pickers are tied to @State variables. State vars are immutable so my code:

    @State var abc:Int
Picker("Type by", choice: $abc)
    let person = UserDefaults.normal
    $abc = person.integer(forKey: "abc")

I get the compile errors:

Can’t assign to property: ‘$abc’ is immutable

Can’t assign worth of kind ‘Int’ to kind ‘Binding’

What’s the manner round this?