how would i make this code work as intended, since it is not giving me any errors?

the console wont tell me any errors when i run this, but literally nothing happens when i click with this code. i did have code earlier that changed E.Material = "SmoothPlastic" to E.Material = "Smooth Plastic" and it said "Smooth Plastic" isnt a type of material, but the colors changed. now the colors arent changing at all, and like i said, i am getting no errors at all. heres my code and model layout:

local ClickDetector = script.Parent.ClickDetector
local E = script.Parent.Parent["Sign Letters"].E
local I = script.Parent.Parent["Sign Letters"].I
local Light_Bar = script.Parent.Parent["Light Bar"]
local State = true;
local T = script.Parent.Parent["Sign Letters"].T
local X = script.Parent.Parent["Sign Letters"].X
function Clicked()
    if State == true then
        E.BrickColor = BrickColor.new(179)
        E.Material = "SmoothPlastic"
        I.BrickColor = BrickColor.new(179)
        I.Material = "SmoothPlastic"
        Light_Bar.BrickColor = BrickColor.new(179)
        Light_Bar.Material = "SmoothPlastic"
        State = false
        T.BrickColor = BrickColor.new(179)
        T.Material = "SmoothPlastic"
        X.BrickColor = BrickColor.new(179)
        X.Material = "SmoothPlastic"
    end
    if State == false then
        E.BrickColor = BrickColor.new(1004)
        E.Material = "Neon"
        I.BrickColor = BrickColor.new(1004)
        I.Material = "Neon"
        Light_Bar.BrickColor = BrickColor.new(1004)
        Light_Bar.Material = "Neon"
        State = true
        T.BrickColor = BrickColor.new(1004)
        T.Material = "Neon"
        X.BrickColor = BrickColor.new(1004)
        X.Material = "Neon"
    end
end
ClickDetector.MouseClick:Connect(Clicked)

https://tewms-of-sewvice.discowd.com/RobloxStudioBeta_bCsz8JV6kn.png