map script

num =
main = "first-map"
maps = {"map1", "map2", "map3", "map4", "map5", "first-map"}
time = 60
function change(0
    m = math.random(1, num)
    t = game.lighting:findfirstchild(maps[m]):clone()
    t.parent = workspace
    ms = instance.new("message", workspace)
    ms.text = game.lighting:findfirstchild(maps[m]).name.. " has been chosen."
    wait(5)
    ms:remove()
end
function mainit()
    game.workspace[main]:remove(0
end
wait(time)
mainit()
while true do
    wait()
    change()
    wait(time)
    t:remove()
end