Hunger Bar (How to make the hunger bar decrease?)

So i'll show you a fix. Follow the following steps: Step Zero (aka description what we need to do 1st): Do step 6. as 1st

1. Make two frames, first is HungerBar (green color) and second is HungerBacking (red color). Their size is {0,5},{0,100} so it takes some long to get your hunger lower.
2. Make a local-script called "ClickFunction".
3. Insert following code there:

local clicker = game.Workspace.mouse.ClickDetector

clicker.MouseClick:connect(function()
	game.Workspace.RemoteEvent:FireServer()
end)

1. Create a serverscript called "HungerBar". Insert it into the "HungerBar" GUI instance.
2. Insert the code;

while true do
	script.Parent.HungerBar.Size = UDim2.new(script.Parent.HungerBar.Size.X, script.Parent.HungerBar.Size.Y - 5)
	wait(1)
end

1. You may get a stable hunger bar but you need to add a folder. Name the folder as "HungerBarr" (don't take care on a misspell), and put the serverscript and frames into the folder.
2. Now we need to make an thing that increases hunger status to full. We will use a tool. Let's name it "Apple."
3. Insert a red sphere called "Handle". Make it small.
4. Paste the provided code here:

local Tool = script.Parent;

enabled = true




function onActivated()
	if not enabled  then
		return
	end

	enabled = false


	local hb = game.Players.LocalPlayer.PlayerGui.ScreenGui.HungerBarr.HungerBar
	Tool.Handle.DrinkSound:Play()

	wait(3)
	
	local h = Tool.Parent:FindFirstChild("Humanoid")
	if (h ~= nil) then
		if (h.MaxHealth > h.Health + 16) then --DO not forget "then"
			hb.Size.Y = hb.Size + 16 -- Do not delete
			h.Health = h.Health + 16
		else	
			h.Health = h.MaxHealth
		end
	end

	Tool.GripForward = Vector3.new(-.976,0,-0.217) --Do not touch any below
	Tool.GripPos = Vector3.new(0.03,0,0)
	Tool.GripRight = Vector3.new(.217,0,-.976)
	Tool.GripUp = Vector3.new(0,1,0) -- Do not touch any above

	enabled = true

end

function onEquipped()
	Tool.Handle.OpenSound:play()
end

script.Parent.Activated:connect(onActivated)
script.Parent.Equipped:connect(onEquipped)

Tada! You get a working bar! Have fun :)