attempt to compare userdata with number, Fix?

I made a module that will check if you have enough coins to buy the provided item, but it always says the error: "attempt to compare userdata with number" Here is the module script

module["PurchaseItem"] = function(item, cost, player)
	local coin = player.leaderstats.Coins
	
	if coin.Value >= cost then
		coin.Value = coin.Value - cost
		
		local Item = game.ReplicatedStorage[item]:Clone()
		Item.Parent = player.PlayerGui.Menu.Inventory.Frame
	end
	
end

And here is the script calling the function

Item.Common.Buy.MouseButton1Click:Connect(function()
	Module["PurchaseItem"](Item.Common.Name, Item.Common.Price, script.Parent.Parent.Parent.Parent.Parent)
end)

#Potential Problems

1. On line 4 you tried Comparing a numbe with A value Instance.
2. On line 5 you also tried Subtracting a number with a Value Instance.

#Solutions On your second script, The second argument of the function call should be Item.Common.Price.Value

#What are Userdatas?

Userdata is a Lua datatype that allows C to Add custom behavior to Lua using the Lua API. All Roblox objects are Userdatas which allows custom behavior to Roblox Classes, such as Read-Only values, You can only Read/Write to Existing values and the Table that holds the construtors such as Instance are true Read-Only tables.

I'm not sure about whats wrong with your script since your not showing everything but. try tonumber(cost)

and instead of script.Parent.Parent.Parent.Parent.Parent trying using game:GetService("Players").LocalPlayer if your doing this on local script.

also, double check your arguments on this line.

Module["PurchaseItem"](Item.Common.Name, Item.Common.Price, script.Parent.Parent.Parent.Parent.Parent)

and lastly double check your variable for coins too.