Whats wrong with my Regenerate script?

I have conducted many test, and tried many different methods, but none of them are working, the script doesn't work in Online nor Solo mode, here is the script;

wait()
local c=workspace.Regen
local mode=c:Clone()
print("Regen Loaded")
while wait(30)do
mode:remove()
wait(4)
c=mode:Clone()
c:MakeJoints()
c.Parent=workspace
end

I can't figure out whats wrong?

Regenerate for what? Model or NPC?

if npc Here try this

name="Humanoid"



robo=script.Parent:clone()



while true do

	wait(180) -- Change this to how many seconds you want to wait till the Crusader respawns. --

	if script.Parent.Humanoid.Health<1 then

		robot=robo:clone()

		robot.Parent=script.Parent.Parent

		robot:makeJoints()

		script.Parent:remove()

	end

end

Hope this helps :D