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Delete from CoreData

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I just follow this Paul video about CoreData and i'm trying to implement the deletion of an element using .onDelete explained in this article. The problem is no matter which row i swipe, this action always remove the first element in the list . Can anyone help me?

import SwiftUI

struct ContentView: View {
    @Environment(\.managedObjectContext) var moc
    @FetchRequest(entity: Country.entity(), sortDescriptors: []) var countries: FetchedResults<Country>

    var body: some View {
            VStack {
                List {
                    ForEach(countries, id: \.self) { country in
                        Section(header: Text(country.wrappedFullName)) {
                            ForEach(country.candyArray, id: \.self) { candy in
                                Text(candy.wrappedName)
                            }
                        }
                    }
                    .onDelete(perform: removeCountry)
                }

                Button("Add") {
                    let candy1 = Candy(context: self.moc)
                    candy1.name = "Mars"
                    candy1.origin = Country(context: self.moc)
                    candy1.origin?.shortName = "UK"
                    candy1.origin?.fullName = "United Kingdom"

                    let candy2 = Candy(context: self.moc)
                    candy2.name = "KitKat"
                    candy2.origin = Country(context: self.moc)
                    candy2.origin?.shortName = "UK"
                    candy2.origin?.fullName = "United Kingdom"

                    let candy3 = Candy(context: self.moc)
                    candy3.name = "Twix"
                    candy3.origin = Country(context: self.moc)
                    candy3.origin?.shortName = "UK"
                    candy3.origin?.fullName = "United Kingdom"

                    let candy4 = Candy(context: self.moc)
                    candy4.name = "Toblerone"
                    candy4.origin = Country(context: self.moc)
                    candy4.origin?.shortName = "CH"
                    candy4.origin?.fullName = "Switzerland"

                    try? self.moc.save()
                }
        }
    }

    func removeCountry(at offSets: IndexSet) {
        for index in offSets {
            let country = countries[index]
            moc.delete(country)
        }
    }
}

   

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