So, I tried making a toggle material gui for people that has low end PC, but it won't work and returns an error called

14:47:03.544 - Invalid value for enum Material

Is there a way to fix this? I'm assuming I did something bad with the Table {} but I still cannot figure out. Thanks in advance.

local players = game:GetService('Players')


local localplayer = players.LocalPlayer
local char = localplayer.Character or localplayer.CharacterAdded:wait()
repeat wait() until char:WaitForChild("Head")
local togglebutton = script.Parent

local materials = true
local smoothplastic = Enum.Material.SmoothPlastic
local objects = {}

wait(4)
local function scan(object)

for i,v in pairs(object:GetDescendants()) do
if v:IsA("Part") and v.Material then
table.insert(objects, v.Material)
end
end

end

scan(game.Workspace)

togglebutton.MouseButton1Click:Connect(function()
    materials = not materials
    if materials then


            for i, v in pairs(game.Workspace:GetDescendants()) do
    if v:IsA("Part") or v:IsA("UnionOperation") and v.Material then
        v.Material=objects[i]
    end
end

        togglebutton.Text = 'UNTOGGLE LOW GFX MODE'
    else
        for i, v in pairs(game.Workspace:GetDescendants()) do
    if v:IsA("Part") or v:IsA("UnionOperation")  then
        v.Material=Enum.Material.SmoothPlastic
    end
end
        togglebutton.Text = 'TOGGLE LOW GFX MODE'
    end
end)
AnonymousEdited