local TweenService = game:GetService("TweenService")
local player = game.Players.LocalPlayer
local TransitionEvent = game.ReplicatedStorage.TransitionEvent
local MainGui = player.PlayerGui:waitForChild("MainGui")
local Transition = MainGui.Transition

TransitionEvent.OnClientEvent:Connect(function(timer)
	local goal_start = {}
	goal_start.BackgroundTransparency = 0
	local tweenInfo = TweenInfo.new(2) -- add N time
	local tween_start = TweenService:Create(Transition, tweenInfo, goal_start)
	tween_start:Play()
end)