How do I make it so that when a specific part appears, another specific part dissapears?

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1

Title
So I’ve got a Red Part and a Blue Part, What I’m doing is basically finding parts in the workspace that have a “Dimension” Attribute
I want to make it so that if the “RED” dimension’s part is visible (or collidable in this case) to make the “BLUE” dimension’s part is invisible (or uncollidable in this case)

local descendants = game.Workspace:GetDescendants()
local UIS = game:GetService("UserInputService")

for index, descendant in pairs(descendants) do
	local Dimension = descendant:GetAttribute("DIMENSION")
	
	if Dimension == "RED" then
		print("Found ".. [["]]..descendant.Name..[["]].. "; Dimension: ".. Dimension)
		UIS.InputBegan:Connect(function(input)
			if input.KeyCode == Enum.KeyCode.E then
				if descendant.CanCollide == true then
					descendant.Transparency = 0.75
					descendant.CanCollide = false
				elseif descendant.CanCollide == false then
					descendant.Transparency = 0.35
					descendant.CanCollide = true
				end
			end
		end)
	end	
	if Dimension == "BLUE" then
		print("Found ".. [["]]..descendant.Name..[["]].. "; Dimension: ".. Dimension)
		UIS.InputBegan:Connect(function(input)
			if input.KeyCode == Enum.KeyCode.E then
				if descendant.CanCollide == true then
					descendant.Transparency = 0.75
					descendant.CanCollide = false
				elseif descendant.CanCollide == false then
					descendant.Transparency = 0.35
					descendant.CanCollide = true
				end
			end
		end)
	end	
end

also, if there’s any way to make this code look smoother or cleaner

2

https://developer.roblox.com/en-us/api-reference/function/Instance/GetPropertyChangedSignal

You can use this to listen for the property changing, and then do stuff accordingly. A Bindable/RemoteEvent could accomplish the same thing as well.

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