How to make a Quiz script?

Why is this not working? The script is inside the CheckAnswer

function onButtonClicked()
	if script.Parent.Parent.Answer.Text == "2" then
		script.Parent.Parent.CheckAnswer.Text = "Correct"
	else
		script.Parent.Parent.Answer.Text = "Wrong"
		script.Parent.Parent.CheckAnswer.Text = "Try agian"
		wait(1)
		script.Parent.Parent.CheckAnswer.Text = "Verify answer"
	end
end

Thankss