How do I make a player only touch a part once?

I have a script below for a random number generator that generates a random number inside a variable. The player then selects the number they think it is by stepping onto the correct part (Currently there is only one part). The script then tells them if they are right or wrong.

The player should then step off the part and a new number should be generated and they would try to select the new number they think it is.

However, currently when a player steps on a part, the output is seen multiple times and new numbers are generated whenever a player steps on a different part of the brick. I think I need to use debounce to fix this but I can't seem to get it to work. The script in full is below.

Help with this would be appreciated.

math.randomseed(tick())
math.randomseed( os.time() )
math.random() math.random() math.random()
local debounce = false


function GenerateNewNumber()
	GenerateNumber = math.random(1,7) -- The number the computer has generated. I.e. what block is the correct block within the workspace.

	SelectedNumber = 0 -- The number the player has selected I.e. what block they stepped on.

	if GenerateNumber == 1 then
		print("1")
	elseif GenerateNumber == 2 then
		print("2")
	elseif GenerateNumber == 3 then
		print("3")
	elseif GenerateNumber == 4 then
		print("4")
	elseif GenerateNumber == 5 then
		print("5")
	elseif GenerateNumber == 6 then
		print("6")
	elseif GenerateNumber == 7 then
		print("7")
	else
		error("Invalid Number")
	end
end


GenerateNewNumber()


script.Parent.Touched:connect(function(player) 
	if debounce == false then
		debounce = true
		SelectedNumber = 1 
		if SelectedNumber == GenerateNumber then
			print("Yes, You guessed the correct number!")
		else 
			print("Sorry, but the correct number was " .. GenerateNumber)
		end
		wait(1)

		GenerateNewNumber()
		debounce=false
	end
end)