How can I make a brick that disipears when its looked at?

Hello I tyried this using the Ray function and it didn't work.

game.Players.PlayerAdded:Connect(function(player)  
local invisiblePart = workspace.InvisiblePart 
local Ignore = player.Character 
while wait(2) do  --You can change the wait value to anything       
local ray = Ray.new(player.Character.HumanoidRootPart.CFrame.p,Vector3.new(0,-5,0)) --Creating the ray down from the character  
local part = workspace:FindPartOnRay(Ray,Ignore) -- Finding the part that the ray hits  if part then  -- If there is a part 
if part == invisiblePart then  -- If the part is the one you want to be invisible 
invisiblePart.Transpareny = 1  
else 
invisiblePart.Transparency = 0  
      end  
   end  
end)

First, you'll need an identifier to designate that a part shall turn invisble when looked at. Do this by right clicking on a part, and insert a BoolValue, rename it to "TurnInvisibleWhenLookedAt" without the quotes, and set it to true. Next, create a new LocalScript in StarterPack, and paste the code below into it.

RANGE = 100;

lastPart = nil;
lastTransparency = nil;
Player = game:GetService("Players").LocalPlayer;

while wait() do
	if (lastPart) then
		lastPart.Transparency = lastTransparency;
	end
	local camera = workspace.CurrentCamera;
	local ray = Ray.new(camera.CFrame.Position, camera.CFrame.LookVector * RANGE);
	local part, point = game.Workspace:FindPartOnRayWithIgnoreList(ray, Player.Character:GetChildren());
	if part then
		local bool = part:FindFirstChild("TurnInvisibleWhenLookedAt");
		if (bool and bool.Value) then
			lastTransparency = part.Transparency;
			part.Transparency = 1;
			lastPart = part;
		end
	end
end

This script will shoot a ray from the player's camera at a given range, and if it hit a part, it will make sure the part is designated, and then it will store the part that it hit, along with the transparency of the part that it hit in order to revert them back later, and then change the transparency to 1 so that the part is invisible.