Make text label in BillbroadGui move up down?

I want make a text label in BillbroadGui can move up and down slowly in a small distance. Just like a hologram to increase realistic of it.

You could use some loops for example!

local text = script.Parent

while true do  -- loops the up and down movement
	for i = 1,30 do
		text.Positon = text.Position + Vector2.new(0,0.3)-- text goes up smoothly by 3
		wait()
	end
	wait(1) -- waits 1 second
	for i = 1,30 do
		text.Positon = text.Position - Vector2.new(0,0.3)-- text goes down again smoothly by 3
		wait()
	end
	wait(1) -- waits another second before repeating
end

`