Hello!

At the second challenge «Go back to project 1 and use a conditional modifier to change the total amount text view to red if the user selects a 0% tip.»

I can't figure out how to toggle @State private var to true when user selects 0%.

Please help me

When user select 0% tip from array but have the modiflier to change foreground color to red with

.foregroundColor(tipPercentage == 4 ? .red : .black)

where 4 is the number in array or you can do

var noTipSelected: Bool {
        let tipSelection = Double(tipPercentages[tipPercentage]) ?? 0
        if tipSelection == 0 {
            return true
        } else {
            return false
        }
    }

then add

.foregroundColor(noTipSelected ? .red : .black)

@NigelGee can you explain this solution? I can see that it works but I don't undertand why. Thank you!

.foregroundColor(tipPercentage == 4 ? .red : .black)

Because tipPercentage == 4 is the forth in the Array of tipPercentages so when that is selected it will be true therfore turn red

thanks for the help!