Really Simple Help with Values?

Okay, so I'm making a "real life simulator" game. And I want the toaster to do more damage the hotter it gets.

So I have 2 scripts, one is damage, the other is adding to damage.

This one is for the damage itself when touched:

Damage = script.Parent:WaitForChild("Damage").Value

script.Parent.Touched:connect(function(hit)
	if hit and hit.Parent and hit.Parent:FindFirstChild("Humanoid") then
		local Humanoid = hit.Parent:WaitForChild("Humanoid")
		hit.Parent.Humanoid.Health = Humanoid.Health - Damage
	end
end)

And here's the one to add to the Damage Value: (It's inside of the value)

Value = script.Parent.Value

while true do
	script.Parent.Value = Value + 5
	wait(1)
end

The damage does -5, but I don't know why the value isn't going up.

I'm new to using values like this.

local Damage = script.Parent.Damage.Value

script.Parent.Touched:connect(function(hit)
    if hit and hit.Parent and hit.Parent:FindFirstChild("Humanoid") then
        local Humanoid = hit.Parent:FindFirstChild("Humanoid")
        hit.Parent.Humanoid:TakeDamage(Damage)
    end
end)

WaitForChild means the script waits until an Instance like Humanoid is added, FindFirstChild finds the first child named a specific name.

local Value = script.Parent.Value

while wait(1) do
    script.Parent.Value = Value + 5
end

Nothing wrong here.

I dunno if this works or not.