Checking String Value Via Script Isn't Working?

I am making a brick and when clicked will clone a model in the workspace and place it in the designated parts position. However I need to make some changes in the way it works due to saving data and because of that I need to add a String value inside of the brick and whenever it has a value (in this example Archer Hut) it will clone and place the cloned model in that parts position. Here is the code (I checked the actual string value in workspace and it has the same value as the script needs):

while true do
	wait(0.001)
	if script.Parent.Building.Value == "ArcherHut" then
		print("ArcherHut")
	end
end

It's not working because you are changing the value from the client and checking it on the server (it doesn't replicate). You will have to use remote events to change the value of that part:

(This is a simple example, note that this is easily exploitable)

Localscript:

local ReplicatedStorage = game:GetService("ReplicatedStorage")
local Remote = ReplicatedStorage:WaitForChild("RemoteName") -- Path to the remote

script.Parent.MouseButton1Click:Connect(function() -- Example event
	Remote:FireServer("Archer")
end)

ServerScript( Recommended to be placed in SSS)

local ReplicatedStorage = game:GetService("ReplicatedStorage")
local Remote = ReplicatedStorage:WaitForChild("RemoteName")

Remote.OnServerEvent:Connect(function(Player,String)
	Pathtovalue.Value = String
end)

Read more about remote events here: https://developer.roblox.com/en-us/articles/Remote-Functions-and-Events