.changed event does not trigger switch function?

hi, I am making a light bar, but I have a problem.

the issue is that when I change activated (boolean value)'s value to true, the lights don't flash!

I can tell by that I don't get "cool" on line 8 in output.

the script is in 1x2 light text (or block).

the activated bool value is in 1x2 light text (or block).

there is no error!

.changed that does not work is on line 60!

script:

---shortcuts
local block = script.Parent
local light = block.PointLight
local activate = block.activated

---function switch
function switch()
	print("cool")

	---if activated is true
	if activate.Value == true then
		
		---change transparency
		block.Transparency = 0

		---activate light
		light.Enabled = true

		---change material
		block.Material = Enum.Material.Neon

		---loop
		while activate.Value == true do

			---change color of block and light
			block.BrickColor = BrickColor.Red()
			light.Color = Color3.fromRGB(255, 0, 0)

			---wait
			wait(math.random(1, 20) / 10)

			---change color of block and light
			block.BrickColor = BrickColor.Blue()
			light.Color = Color3.fromRGB(0, 0, 255)

			---wait
			wait(math.random(1, 20) / 10)
		end
	end

	---if activated is false
	if activate.Value == false then
		
		---change transparency
		block.Transparency = 0.5

		---change material
		block.Material = Enum.Material.Glass

		---de-activate light
		light.Enabled = false

		---change color of block and light
		block.BrickColor = BrickColor.White()
		light.Color = Color3.fromRGB(255, 255, 255)
	end
end

---triggers
activate.Changed:Connect(switch)

One problem I noticed; You didn't even put anything to change the Value of the boolean. Try experimenting with these:

---shortcuts
local block = script.Parent
local light = block.PointLight
local activate = block.activated

---function switch
function switch()
	print("cool")

	---if activated is true
	if activate.Value == true then

		---change transparency
		block.Transparency = 0

		---activate light
		light.Enabled = true

		---change material
		block.Material = Enum.Material.Neon

		---loop
		while activate.Value == true do

			---change color of block and light
			block.BrickColor = BrickColor.Red()
			light.Color = Color3.fromRGB(255, 0, 0)

			---wait
			wait(math.random(1, 20) / 10)

			---change color of block and light
			block.BrickColor = BrickColor.Blue()
			light.Color = Color3.fromRGB(0, 0, 255)

			---wait
			wait(math.random(1, 20) / 10)
		end
		
	end

	---if activated is false
	if activate.Value == false then

		---change transparency
		block.Transparency = 0.5

		---change material
		block.Material = Enum.Material.Glass

		---de-activate lights
		light.Enabled = false

		---change color of block and light
		block.BrickColor = BrickColor.White()
		light.Color = Color3.fromRGB(255, 255, 255)
	end
end

---triggers
block.Touched:Connect(function(hit)
	activate.Value = not activate.Value
end)

activate.Changed:Connect(switch)

The script is listening for any changes in the property of activate. But you didn't do anything to change properties, therefore the script is not doing anything.