How to make the timer stop when clicked again?

I have a function that starts the timer, but for some reason I can't make it stop with the "break" command. No errors either.

local Use
local Active = true
local InCloak = true
local StopTimer = true
local UseingCloak = script.Parent.IsCloak
local DoneCloaking = script.Parent.DoneCloak
local Timer = script.Parent.CloakTimer
local Count = script.Parent.CountUp


script.Parent.Activated:Connect(function()
	if Timer.Value <= 10 then
	else
	if Active == true then
		coroutine.resume(coroutine.create(function()
			Active = false
				wait(2)-- Delay
				StopTimer = true
			UseingCloak.Value = true
			Count.Value = false
			script.Parent.Handle.Cloak:Play()
			wait(1)
			InCloak = true
			
			if InCloak == true then
				InCloak = false
				Active = true
			end


		end))

	elseif InCloak == true then
		InCloak = false

			wait(2)--Delay
			StopTimer = false
		-- Uncloak
		script.Parent.Handle.UnCloak:Play()
		Count.Value = true
		wait(1) -- general tool cooldown
			Active = true
		end
	end
end)


function calculate() -- Timer Countdown
	if UseingCloak.Value == true then
		while true do
			wait(.5)
			Timer.Value -= 1
			if Timer.Value <= 0 then -- This doesn't stop
				script.Parent.Handle.UnCloak:Play()
				InCloak = false
				Count.Value = true
				Active = true
				break
			elseif StopTimer == false then  -- This doesn't stop
				StopTimer = false
				script.Parent.Handle.UnCloak:Play()
				InCloak = false
				Count.Value = true
				Active = true
				break
			end	
		end
	end
end

function calculate2() -- Timer Regen
	if Count.Value == true then
		while true do
			wait(.1)
			Timer.Value += 0.1
			if UseingCloak.Value == true then
				break
			end
			if Timer.Value >= 60 then
				Timer.Value = 60
				if Timer.Value <= 0 then
					Timer.Value = 0
				end
			end
		end
	end
end

UseingCloak:GetPropertyChangedSignal("Value"):Connect(calculate)
DoneCloaking:GetPropertyChangedSignal("Value"):Connect(calculate)
Count:GetPropertyChangedSignal("Value"):Connect(calculate)