Multiple Developer products

[Zist43 (Samsung)]

How to make a multiple donation system
When i tried to make donate 10 robux and 15 robux, then only 10 worked, if I bought for 15 then the event came as for 10 robux. How can I fix this?
code:

local service = game:GetService("MarketplaceService")

Service.ProcessReceipt = function(new)
Local plr = game.Players:GetPlayerByUserId(new.PlayerId)
If new.ProductId == example then
Game.ReplicatedStorage.event:FireClient(plr)
Elseif ProductId == example2 then
Game.ReplicatedStorage.Event2:FireClient(plr)
Return Enum.ProductPurchaseDecision.PurchaseGranted
end
end 

And i tried other method:Instead of elseif
I made 15 robux developer product as other script.but still not working.

local service = game:GetService("MarketplaceService")

Service.ProcessReceipt = function(new)
Local plr = game.Players:GetPlayerByUserId(new.PlayerId)
If new.ProductId == example2 then
Game.ReplicatedStorage.event2:FireClient(plr)
Return Enum.ProductPurchaseDecision.PurchaseGranted
end
end

If you say that this method not working.In my other game this method works

[Dev_Sie (Sie)]

you can only have 1 developer product handler script in the game so if you have 2 one of them will stop working

[x6nnx]

I made a module script that you can store products in with functions that call each time they purchase each product.

Module Script → game.ReplicatedStorage

--> Services
local Players = game:GetService("Players")

--> Class
local ProductHandler = {
	Products = {
		[PRODUCTIDHERE] = function(buyer: Player, ProductId: number)
			--> DO WHAT EVER YOU WANT TO HAPPEN WHEN THEY BUY
		end,
	}
}

--> Functions
function ProductHandler.ProductPurchased(userId, productId, wasPurchased)
	if wasPurchased == true then
		if ProductHandler.Products[productId] ~= nil then
			local Player = Players:GetPlayerByUserId(userId)
			
			if Player then
				ProductHandler.Products[productId](Player, productId)
			end
		end
	end
end

return ProductHandler

Script → game.ServerScriptService

local ReplicatedStorage = game:GetService("ReplicatedStorage")
local ProductHandler = require(ReplicatedStorage:WaitForChild("ProductHandler") --> The Module Above

local MarketplaceService = game:GetService("MarketplaceService")

MarketplaceService.PromptProductPurchaseFinished:Connect(ProductHandler.ProductPurchased)

[vertovy (Max)]

Instead of using PromptProductPurchaseFinished i recommend to use ProcessReceipt

[Zist43 (Samsung)]

I alr fixed it,so dont worry!!I fixed it

[Zist43 (Samsung)]

So guys,i found an sollution,i removed if plr statement,and change section of

return 
Enum.ProductPurchaseDecision.PurchaseGranted