ERROR! What is wrong?

[RazMouze]

Hey guy's, i'm new at programming, and just wanna know what i have done wrong.

Coding

CarDealerClosed = true
local midW, midH = ScrW / 2, ScrH / 2

local CarFrame = vgui.Create("DFrame")
	CarFrame:SetSize( 500, 500 )
	CarFrame:SetPos( midW - ( SHPage:GetWide() / 2 ), midH - (SHPage:GetTall() / 2 ) )
	CarFrame:SetTitle("CarDealerFrame")



	if CarDealerClosed == true then
	
	CarFrame:SetVisible( false )
	CarFrame:Close()
	
	end



local function CarDealer( ply , text, team )
	if string.sub( text, 1, 11) == "!bilhandler" then


	CarFrame:SetVisible( true )
	CarFrame:Show()
	CarDealerClosed = true

	end
end
hook.Add( "PlayerSay", "CarDealer", CarDealer )

Console Error

There is 1 Lua problem!
	Please check your console for more information!
[ERROR] A runtime error has occurred in "addons/darkrpmodification-master/lua/darkrp_modules/cardealer/sv_config.lua" on line 4.
The best help I can give you is this:

attempt to perform arithmetic on global 'ScrW' (a nil value)

Hints:
	- No hints, sorry.

The responsibility for this error lies with (the authors of) one (or more) of these files:
	1. addons/darkrpmodification-master/lua/darkrp_modules/cardealer/sv_config.lua on line 4
	2. gamemodes/darkrp/gamemode/libraries/fn.lua on line 82
	3. gamemodes/darkrp/gamemode/libraries/fn.lua on line 82
	4. gamemodes/darkrp/gamemode/libraries/modificationloader.lua on line 92
	5. gamemodes/darkrp/gamemode/libraries/modificationloader.lua on line 147
	6. gamemodes/darkrp/gamemode/init.lua on line 87
------- End of Simplerr error -------

- Raz

[P4sca1]

Should be ScrW() and ScrH(). They are functions returning the screen height/width, not global variables.

[FVJohnny]

P4sca1 is on the right.

[tzahush]

PlayerSay is a serverside hook, you need to use the networking library and send a net message to open that hook, and seperate the clientside and serverside.
Use this networking guide:
[url]https://wiki.garrysmod.com/page/Net_Library_Usage[/url]
Note, you need to send a message from a server to a client.

[RazMouze]

I think i should start programming some more simpel stuff :)

- But Thanks for the replies. Raz

[tzahush]

[QUOTE=RazMouze;49370294]I think i should start programming some more simpel stuff :)

- But Thanks for the replies. Raz[/QUOTE]

If you'd like to get into coding, you can catch me up on steam, i usually help people start coding, and help with questions.

[RazMouze]

[QUOTE=tzahush;49370418]If you'd like to get into coding, you can catch me up on steam, i usually help people start coding, and help with questions.[/QUOTE]

Done, big thanks. :)
- Raz