FE Dialog not working on server?

So I'll start off by explaining how I have my Dialog setup; I have the Dialog in an npc's head in the Workspace, the following code is inside a Script inside the Dialog. The script works locally but not on a server. I've been told that I should be handling this locally but I have no idea how I would do so. Any and all help is greatly appreciated!

Edit: I forgot to specify what wasn't working, the print on line 11 and everything following it isn't firing on the server

local ReplicatedStorage = game:GetService("ReplicatedStorage")
local ManipulateStoreEvent = ReplicatedStorage.RemoteEvents:WaitForChild("ManipulateStoreEvent")

local ShopKeeper = script.Parent.Parent.Parent
local Position = ShopKeeper.HumanoidRootPart.CFrame.p
local Dialog = script.Parent
local PlayersUsing = {}

script.Parent.DialogChoiceSelected:Connect(function(Player, DialogChoice)
	if DialogChoice.Name == "Yes" then
		print("Attempting to open " .. Player.Name .. "'s shop")
		ManipulateStoreEvent:FireClient(Player, "Open")
		table.insert(PlayersUsing, Player)
	end
end)

function getPlayerPosition(Player)
	local Character = game.Workspace:FindFirstChild(Player.Name)
	if Character then
		return Character.HumanoidRootPart.CFrame.p
	end
end

function removePlayerFromPlayersUsing(PlayerRemoving)
	for Index, Player in pairs(PlayersUsing) do
		if PlayerRemoving == Player then
			table.remove(PlayersUsing, Index)
		end
	end
end

while wait(0.5) do
	if Dialog.InUse then
		for _, Player in pairs(PlayersUsing) do
			local Magnitude = (Position - getPlayerPosition(Player)).magnitude 
			if Magnitude > Dialog.ConversationDistance then
				print("Attempting to close " .. Player.Name .. "'s shop")
				ManipulateStoreEvent:FireClient(Player, "Close")
				removePlayerFromPlayersUsing(Player)
			end
		end
	end
end