How do i modify this script to work with berezaas tycoon kit?

Ok so my script is supposed to change the leaderstats of your cash when you buy a dev product

local plr = script.Parent.Parent.Parent.Parent.Parent
local link = game:GetService("MarketplaceService")
deb = 0


script.Parent.MouseButton1Click:connect(function()
local marketId = 20383718 --ID OF YOUR DEVELOPER PRODUCT  
link:PromptProductPurchase(plr,marketId)
link.ProcessReceipt = function(receiptInfo)
if Enum.ProductPurchaseDecision.PurchaseGranted and receiptInfo.PlayerId == plr.userId then
if deb == 0 then
deb = 1
plr.leaderstats.Cash.Value = plr.leaderstats.Cash.Value + 1000 --Alter what stat you would like to increase or decrease after the player has purchased.
wait(1)
deb = 0
end
end
end
end)

It works fine but the money isnt real money here is where it really stores money https://gyazo.com/66bf6d65944ea3c5bf03a2367ab18e2f

I want to make it so that way if any player buys it money gets added