My Broken Code

spawntimer = 0
bullets = {}

function spawnbullet()
	spawntimer = spawntimer + 1
	if(spawntimer % 30 == 0) then
		local posx = 0
		local posy = 30 - math.random(60)
		local bullet = CreateProjectile('bullet', 0, 0)
		table.insert(bullets, bullet)
	end

	for i=1, #bullets do
		local bullet = bullets[i]
		bullet.Move[0,-60]
	end
end