Need to format the currency while typing in textfield. I have tried many answers but nothing worked in my case. My currency is INR. When user type it should change from, example 1200 to ₹1,200. I am able to convert it to ₹1200 but comma is missing.

My implementation:

        extension NumberFormatter{

        static var currencyFormatter: NumberFormatter {
            let formatter = NumberFormatter()
            formatter.numberStyle = .currency
            formatter.currencySymbol = "₹"
            formatter.maximumFractionDigits = 0
            formatter.usesGroupingSeparator = true
            formatter.currencyCode = "INR"
            formatter.currencyGroupingSeparator = ","
            formatter.groupingSeparator = ","
            formatter.maximumIntegerDigits = 10
            formatter.locale = Locale(identifier: "en_IN")
            return formatter
}}

 @State var testAmount = String()

TextField("₹ 0", text: $testAmount)
                    .onChange(of: testAmount){newvalue in
                        if let parsedAmount = Double(newvalue){
                            
                            self.testAmount = NumberFormatter.currencyFormatter.string(from: NSNumber(value: parsedAmount)) ?? ""
                            
                        }
                    }
                    .keyboardType(.numberPad)