Hello! I made this module script, but it doesn't work. Can someone help me?

Here's the Module Script;

local NotificationModule = {}
local NotificationLabel = game.StarterGui.NotificationGui.NotificationLabel

function NotificationModule.NewNotification(text, duration)
	local Notification = NotificationLabel:Clone()
	Notification.Text = text
	
	Notification:TweenPosition(UDim2.new(0.829, 0,0.876, 0), Enum.EasingDirection.Out, Enum.EasingStyle.Sine, .35)
	wait(duration)
	Notification:TweenPosition(UDim2.new(1, 0,0.876, 0), Enum.EasingDirection.Out, Enum.EasingStyle.Sine, .35)
end

return NotificationModule

The module is supposed to display a GUI with the wanted text and duration.

I call the module which is parented in a script in workspace.

Here's the script that calls the module;

local NotificationModule = require(script.NotificationModule)

wait(5)

NotificationModule.NewNotification("Hello!", 6.5)

I have the wait so it doesn't fire the code when I join the game.

The script doesn't work and I don't know what to do. Thanks to anyone who helps!