[SOLVED BY ME]Code inside function not firing?

I have been working on this piece of code, and I've come accross a bug, I believe. Here's the script.

local CompletedStage3 = false
script.Parent.Text = " "
Humanoid.WalkSpeed = 16
Humanoid.JumpPower = 50
workspace.Stage3KeycardPart.Success.Changed:Connect(function()
	if workspace.Stage3KeycardPart.Success.Value == true then
		CompletedStage3 = true
		for i = 1,#SuccessStage3 do
			script.Parent.Text = string.sub(SuccessStage3,1,i)
			workspace.Typing:Play()
			wait()
		end
	else
		CompletedStage3 = true
		for i = 1,#FailureStage3 do
			script.Parent.Text = string.sub(FailureStage3,1,i)
			workspace.Typing:Play()
			wait()
		end
	end
end)
if CompletedStage3 == true then
	print("completed")
end

It is supposed to work, and it shows nothing in the output. No warnings, errors or prints. Any help please?

Oops! Sorry. Apparently the value of Success actually affected the script. The value's default value was actually set to false, so the script didn't find a change when the math.random chose 1, or failure. I fixed it using another value within the Stage3Keycardpart called Failure. This way, I can see if the player failed or not. Thank you for replying anyways!