My struct values cannot be used in function -> Cannot convert value of type 'Int' to expected argument type 'Range<Int>' - struct

Question

Im getting an error when using my Question struct in my function checkAnswer
I want to use the value in questions[index].answer but it error says
Cannot convert value of type 'Int' to expected argument type 'Range' and Value of type 'ArraySlice' has no member 'answer'
What did I do wrong on that part?
import SwiftUI
struct Question {
var question: String
var answer: Int
}
struct ContentView: View {
#State private var isGameRunning = false
let multiplyTableRange = Range(2...12)
#State private var selectedTable = 2
#State private var selectedNumOfQuestions = 5 //min of 5
#State private var variantsForCountOfQuestions = [5, 10, 20]
#State private var questions = [Question]()
#State private var currentQuestionIndex: Int = 1
#State private var answerInput: Int = 0
#State private var score = 0
#State private var isGameDone = false
#State private var gameCompleteMessage = ""
var body: some View {
if isGameRunning{
Group{
VStack{
Text("Your Score \(score)")
Text("\(questions[currentQuestionIndex].question)")
TextField("Enter your answer", value: $answerInput, formatter: NumberFormatter())
//error here
Button("Enter") {
checkAnswer(userAnswer: answerInput ?? 0 , answer: questions[currentQuestionIndex].answer)
}
.alert(isPresented: $isGameDone) {
Alert(title: Text(gameCompleteMessage), message: Text("Restart game"), primaryButton: .destructive(Text("Okay")) {
isGameRunning = false
answerInput = 0
score = 0
gameCompleteMessage = ""
currentQuestionIndex = 1
}, secondaryButton: .cancel())
}
}
}
}else{
Group{
VStack{
Text("Pick multiplication table to practice")
Picker("Pick multiplication table to practice", selection: $selectedTable){
ForEach(multiplyTableRange, id: \.self){
Text("\($0)")
}
} //eof picker
.labelsHidden()
.pickerStyle(SegmentedPickerStyle())
Text("How many questions?")
Picker("", selection: $selectedNumOfQuestions){
ForEach(variantsForCountOfQuestions, id: \.self){
Text("\($0)")
}
}//eofPicker
.labelsHidden()
.pickerStyle(SegmentedPickerStyle())
Button("Start"){
generateQuestions()
isGameRunning.toggle()
}
}
}
}
} //eof body
func generateQuestions(){
questions.removeAll()
for question in 1...selectedNumOfQuestions {
let x = Question(question: ("\(selectedTable) X \(question)"), answer: selectedTable * question)
questions.append(x)
}
}
func checkAnswer(userAnswer: Int, answer: Int) {
if userAnswer == answer {
score += 1
}
if currentQuestionIndex < selectedNumOfQuestions - 1 {
currentQuestionIndex += 1
} else {
gameCompleteMessage = "Your score is \(score)"
isGameDone = true
}
}
}
struct ContentView_Previews: PreviewProvider {
static var previews: some View {
ContentView()
}
}