Scoreboard help

[FelixCrimson]

Just wondering how I am to set up the scoreboard, I've tried to following but I get an error message.

function scoreboard:show()
	local blur = Material('pp/blurscreen')
    local function draw_Blur(panel, amount) 
	local x, y = panel:LocalToScreen( 0, 0 )
	local scrW, scrH = ScrW(), ScrH()
	surface.SetDrawColor( 255, 255, 0 )
	surface.SetMaterial( blur )
	for i = 1, 6 do
		blur:SetFloat('$blur', (i / 6) * (amount ~= nil and amount or 6))
		blur:Recompute()
		render.UpdateScreenEffectTexture()
		surface.DrawTexturedRect(x * -1, y * -1, scrW, scrH)
	end 
    end 
    local Base = vgui.Create( "DFrame")
    Base:SetPos(500,0)
    Base:SetSize( 920, 1050 )
    Base:SetDraggable( true )
    Base:SetTitle( "                " ) 
    Base:ShowCloseButton(true)
    Base.Paint = function( self, w, h )
    draw_Blur( self, 5 )
    draw.RoundedBox( 0, 0, 0, self:GetWide(), self:GetTall(), Color( 0, 0, 0, 160 ) )
end 

	function scoreboard:hide()
		Base:Remove()
	end
end
function GM:ScoreboardShow()
	scoreboard:show()
end

function GM:ScoreboardHide()
	scoreboard:hide()
end

and the error...

[ERROR] lua/test.lua:4: attempt to index global 'scoreboard' (a nil value)
  1. unknown - lua/test.lua:4

[Jeezy]

Looks like you haven't defined scoreboard before creating the functions.

[FelixCrimson]

ive placed the following infront of the code...

scoreboard = scoreboard or {}

and my error code has now turned to this

[ERROR] lua/test.lua:34: attempt to index global 'GM' (a nil value)
  1. unknown - lua/test.lua:34

[Jeezy]

Adding [lua]GM = GM or GAMEMODE[/lua] at the top will fix it I believe.

Also if you're not making your own gamemode you should just use hooks.
[lua]hook.Add("ScoreboardShow", "myuniqueid", function()
-- do stuff
end )
[/lua]