CoinsProduct

local MPS = game:GetService("MarketplaceService")
local Coins100 = 1191084233

MPS.ProcessReceipt = function(Info)
    if Info.ProductId == Coins100 then
        local Player = game.Players:GetPlayerByUserId(Info.PlayerId)
        Player.Coins.Value = Player.Coins.Value + 100
    end
end