I am trying to make it so that the parts, PointLights, and BillboardGuis fade in and out in my police car, but with this script, it only works with one part, and the rest of the parts do not work. Anyone who can help me fix this?

local grp1 = script.Parent.Lights

local TweenService = game:GetService("TweenService")



while true do
for i,v in pairs(grp1:GetDescendants()) do
    if v:IsA("BasePart") then
    parton = TweenService:Create(v, TweenInfo.new(1), {Transparency = 0})
    partoff = TweenService:Create(v, TweenInfo.new(1), {Transparency = 1})
end
if v:IsA("ImageLabel") then
    guion = TweenService:Create(v, TweenInfo.new(1), {ImageTransparency = 0})
    guioff = TweenService:Create(v, TweenInfo.new(1), {ImageTransparency = 1})
end
if v:IsA("PointLight") then
    lighton = TweenService:Create(v, TweenInfo.new(1), {Brightness = 0})
    lightoff = TweenService:Create(v, TweenInfo.new(1), {Brightness = 1})
end
end
if script.Parent.on.Value == 1 then
    parton:Play()
    guion:Play()
    lighton:Play()
    wait(1) 
    partoff:Play()
    guioff:Play()
    lightoff:Play()
elseif script.Parent.on.Value == 0 then
    partoff:Play()
    guioff:Play()
    lightoff:Play()
end
wait(0.05)
end
Anonymous