Why isn't my creature following me?

I'm trying to make this humanoid thing follow me when I spawn, but it broke.

while true do 
    wait(0.01)
    local plr = game.Players.LocalPlayer
    local char = plr.Character
    pos = char.Torso.Position
    script.Parent.BodyPosition = pos
end

This is a SCRIPT, not a local script, in a creature in lighting. What am I doing wrong?