How would I assign ProductId into a devproductscript so I dont keep purchasing the same value?

I have multiple dev products that give different credits but they all give the same amount.

local MarketPlaceService = game:GetService("MarketplaceService")
local players = game:GetService("Players")
local ProductId = 982191893

local function processReceipt(receiptInfo)
	local player = players:GetPlayerByUserId(receiptInfo.PlayerId)
	if not player then
		return Enum.ProductPurchaseDecision.NotProcessedYet
	end
		
		if player then
			local new = player.leaderstats.Credits.Value + 1000
	print ("Working")
		game.Workspace.Sounds.PurchaseSound:Play()
			
	player.leaderstats.Credits.Value = new
		end
		return Enum.ProductPurchaseDecision.PurchaseGranted
end


MarketPlaceService.ProcessReceipt = processReceipt