My script still runs even when disabled by **Server** script?

Hello, Currently, I'm making a lockdown door that depends on the "Lockdown" value in the "Settings" folder via workspace.

Code:

local Level = script.Parent.Clearance
local r=game:getService("RunService")
local DoorModel = script.Parent
local Door1 = DoorModel.Doors.Door1
local Door2 = DoorModel.Doors.Door2
local Sound = DoorModel.Sound_Folder.Sound_Thing
local ret = Door1.CFrame
local ret1 = Door2.CFrame
local look=Door1.CFrame.lookVector
local Inuse=false

function Open()
    Sound.Lockdown:Play()
    for i=0,math.pi*2,math.pi/31 do
	    r.Stepped:wait()
	    Door1.CFrame=ret+Vector3.new(-1.53,0,-1.53)*look-math.cos(i)*0.5*look
	    Door2.CFrame=ret1-Vector3.new(-1.53,0,-1.53)*look+math.cos(i)*0.5*look
    end
end

while true do
    wait(5)
    if workspace.Settings.Lockdown.Value==true then
	    Open()
	    wait(5)
	    Sound.Lockdown:Stop()
	    wait(0.25)
	    script.Parent.System.Disabled=true
	elseif workspace.Settings.Lockdown.Value==false then
	    Sound.Lockdown:Play()
	    Door1.Position= Vector3.new(3.023, 3.81, 0.05)
	    Door2.Position= Vector3.new(-3.25, 3.81, 0.05)
	    wait(5)
	    Sound.Lockdown:Stop()
	    wait(0.25)
	    script.Parent.System.Disabled=true
    end
end

Any and all help is appreciated at great lengths.

Thank you, Rook

RookPvPz#8960

Edited ~ Tab your code correctly !