**if points > Cost then...** returning "user ... attempt to compare number with userdata"?

I created a button with a local script in it Link: http://i.imgur.com/ogML7pR.png.

Here is the code:

-- 				BUY SYSTEM, CREATED BY ASWORMEDORIJAN111, FOR TEST.
-- 							7.4.2018.  OR    4/7/2018										




-- VARIABLES


Enabled = script.Parent.Enabled
Cost = script.Parent.SwordCost.Value
ItemName = script.Parent.SwordName.Value
local player = game.Players.LocalPlayer
local character = player.Character
local backpack = player.Backpack
local points = player.leaderstats


-- CODING SECTION


if (Enabled == true) then -- This is code for 'Enabled' value.
	script.Disabled = false
else
	script.Disabled = true
end

local itemf = game.Lighting
local item = itemf:FindFirstChild(ItemName)

function onclick()
	if points > Cost then 
		item:Clone().Parent = backpack
		points = points - Cost
	end
end

script.Parent.MouseButton1Click:connect(onclick)

And the output is here: http://i.imgur.com/DsnG4PE.png.******** Idk where did I failed... Sorry for my bad English.

At line 32, you're attempting to compare a number with an object, which will of course, return an error stating : 'attempt to compare a number with a userdata(object or something else)'

Here's how you can resolve this problem:

if points.Value > Cost then