How do i fix my clickdetector for gui script that wont work?

im using clickdetector inside brick, it has a normal script inside:

script.Parent.ClickDetector.MouseClick:Connect(function(p)
    if p.Character.Masked.Value == true then
        if p.Character.Bag.Value == false then
        print("Stolen")
        --give bag to character
        p.Character.Bag.Value = true
        script.Parent.Parent:Destroy()
        elseif p.Character.Bag.Value == true then
        p.PlayerGui.bagwarning.Enabled = true
        wait(1)
        p.PlayerGui.bagwarning.Enabled = false
        end
    end
end)

i also tried

script.Parent.ClickDetector.MouseClick:Connect(function(p)
    if p.Character.Masked.Value == true then
        if p.Character.Bag.Value == false then
        print("Stolen")
        --give bag to character
        p.Character.Bag.Value = true
        script.Parent.Parent:Destroy()
        elseif p.Character.Bag.Value == true then
        p.PlayerGui["bagwarning"].Enabled = true
        wait(1)
        p.PlayerGui["bagwarning"].Enabled = false
        end
    end
end)

and supposedly the (p) is the player that clicks it which is me, and i even CHECKED for that screen gui, the name IS correct, but it doesnt work and output says:

bagwarning is not a valid member of PlayerGui

please help :()