How do I make a script run everytime a BoolValue's value changes?

So, I'm making a game and it has these songs that play depending on the value of a BoolValue in ReplicatedStorage, this is my code:

local sound = script.Parent.Ambient 
local sound2 = script.Parent.Combat
local value = game.ReplicatedStorage.Combat
if value.Value == false then
	sound2.Volume = 0.5
	wait()
	sound2.Volume = 0
	wait()
	sound2:Stop()
	sound:Play()
	sound.Volume = 0.5
	wait()
	sound.Volume = 1
else
	sound.Volume = 0.5
	wait()
	sound.Volume = 0
	wait()
	sound:Stop()
	sound2:Play()
	sound2.Volume = 0.5
	wait()
	sound2.Volume = 1
	end

I want the script to run everytime the value changes to either true or false. Notes: I have attempted the Changed event, but it did not work at all. (It doesn't play any song). If I use "while wait() do" then it'll just keep playing the song from the start. EDIT: Ok, I hope the script is proper now. Anyways, I said in the notes that I have used the Changed event, but it doesn't work. No song is playing, even when changing the value.

You can do that by doing this: Using the changed will run this function everytime something is changed in this object. So this would do what you would want.

script.Parent.Parent.CheckBox2.checked.Changed:Connect(function()

--your code here

end)