Delete items of an class's array from a view... (?)

Hi I am really new coding in swift so sorry if I'm asking something stupid. But I can't see the error or the solution an I don't know what to do :( I have this class and structure :

   @Published var items : [Items] = []
   @Published var showButtons = false

       
       func addItem(id: Int, category: String, image: String) {
           items.append(Piercing(id: id, category: [category], image: image))
       }

       func deleteItem(item: Item) {
           if let index = items.firstIndex(of: item) {
               item.remove(at: index)
           }
       }
       
       init() { }
       
}

struct Item: Identifiable, Decodable, Equatable {
    var id: Int
    var category: [String]
    var image: String
}

then I create a view for this:

struct ItemView: View {
    var item: Item
    @State private var position = CGPoint(x: 100, y: 100)
    @ObservedObject var items: ItemModel = .init()
    @State  var showButtons = false
    var body: some View {
        
        if items.showButtons {
                    Button (role: .destructive) {
                        withAnimation {items.deleteItem(item: item)}
                        
                    } label:{
                            Image(systemName: "trash")                         
                                .font(.body)
                                .bold()          
                }
            }
            
            VStack {
                    Image(item.image)
                        .resizable()
                        .aspectRatio(contentMode: .fit)
                        .position(position)
                        .onTapGesture(count: 1, perform: {
                            withAnimation {  items.showButtons.toggle()}
                        })
            }
        }
    }

in my ContentView I have this @StateObject var items: ItemModel = .init()

Right, from another View I add Items to ContentView perfectly, and from the ContentView I can deleteItems too... but I want to add a button in this view can't delete item from the button I have in this view calling deleteItem function from here... Any idea of what I'm doing in a wrong way...

really thanks!