Struggling with task.delay and task.cancel

[ActuallyAToaster (Uncon)]

This problem is a bit difficult to explain but I’ll try. I am not very familiar with the task library btw so please be patient with me. I have a script where once your stamina reaches 100, the stamina bar will stay for 3 seconds before fading away. However, my problem was that if the player continued running after hitting 100 stamina the bar would still disappear. So I tried using Task.delay() on the disappearance so that if the player continued running I could use Task.cancel() to stop it from disappearing. I’m having a lot of trouble though. With my current code, i get the error, “invalid argument #1 to ‘cancel’ (thread expected, got nil)”.

Here’s my full code:

local ReplicatedStorage = game:GetService("ReplicatedStorage")
local TweenService = game:GetService("TweenService")

local info = TweenInfo.new(
	1,
	Enum.EasingStyle.Linear,
	Enum.EasingDirection.In	
)

local info2 = TweenInfo.new(
	3,
	Enum.EasingStyle.Linear,
	Enum.EasingDirection.In	
)

local Tween1 = TweenService:Create(script.Parent, info, {BackgroundTransparency = 0})
local Tween2 = TweenService:Create(script.Parent.Parent.StaminaBackground, info, {BackgroundTransparency = 0.6})

local Tween3 = TweenService:Create(script.Parent, info2, {BackgroundTransparency = 1})
local Tween4 = TweenService:Create(script.Parent.Parent.StaminaBackground, info2, {BackgroundTransparency = 1})

local DelayDisappearance

ReplicatedStorage.CanSprint.Stamina.Changed:Connect(function()
	
	if script.Parent.BackgroundTransparency ~= 0 then
		Tween1:Play()
		Tween2:Play()
	else
		if ReplicatedStorage.CanSprint.Stamina.Value == 100 then
			DelayDisappearance = task.delay(3, function()
				if ReplicatedStorage.CanSprint.Stamina.Value == 100 then
					Tween3:Play()
					Tween4:Play()
				end
			end)
			
		else
			task.cancel(DelayDisappearance) -- Error is thrown here.
		end
	end
	script.Parent.Size = UDim2.new(0, (190 / 100) * ReplicatedStorage.CanSprint.Stamina.Value, 0, 5) 
end)

Please help!!

[MikeartsRBLX (Redancyx)]

your code is trying to cancel a variable function that hasn’t been defined.

[ActuallyAToaster (Uncon)]

Alright, I replaced

local DelayDisappearance

with this:

local DelayDisappearance = task.delay(1, function()
	--Nothing
end)

so it has something to cancel before DelayDisappearance is re-defined. It’s working great now, but if this is a bad idea please let me know. Thanks!

[MikeartsRBLX (Redancyx)]

it seems alright but if you want to access that variable from another thread you should use an empty local DelayDisappearance