Really basic animated hello world, not working

[Davasaurous]

StartNotHit = true
i = 0
GoingLeft = true

while StartNotHit do
	pad = Controls.read()
	if pad:start() then StartNotHit = false end
	screen:clear()
	
	screen:print(200 + i, 135, "Hello World", Color.new(0,255,0))
	if GoingLeft == true then i = i + 1 end
	if GoingLeft == false then i = i - 1 end
	if i == 100 then GoingLeft = False end
	if i == 1 then GoingLeft = True end
	
	screen:flip()
end

I have no idea what's wrong with it. Hello World just sits there not moving :\

Obviously I fucked up my logic or something. Any help?