[1st post] is there an easy way for a global variable for iOS & watch os, code below

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import SwiftUI

struct ContentView: View {
    var model = ViewModelPhone()
    @State var reachable = "No"
    @State var Message = ""
    @State var GolfCount :Int = 0
    var body: some View {
        VStack{
            Text("Reachable \(reachable)")
            
            Button(action: {
                if self.model.session.isReachable{
                    self.reachable = "Yes"
                }
                else{
                    self.reachable = "No"
                }
            }) {
                Text("Update")
            }
            //mesage input
            TextField("Input your message", text: $Message)
                .padding(100)
            Button(action: {
                //message sending
                self.model.session.sendMessage(["message" : self.Message], replyHandler: nil) { (error) in
                    print(error.localizedDescription)
                }
            }) {
            Text("Send")
            } //golf Counting
            Button(action: {
                
                GolfCount += 1
                })
            {
            Text("Schläge")
            Text(String(GolfCount))
            }}}}

struct ContentView_Previews: PreviewProvider {
    static var previews: some View {
        ContentView()
    }
}

!Image of the both devices|180x499](upload://amrzKcHGj9uCgQGd3mKfkltriYw.jpeg)

the sending function is working, and is displayed on the watch, the counter is counting, and now I am wondering how to get the Int value to the watch, while being a “working” variable any advice?