nil value ?

[Gallagher]

Hi !

WHAT I fix on line 1?

error ↓

welcome.lua:1: attempt to call global 'guiGetScreenSize' (a nil value)

  
local x,y,z = guiGetScreenSize()  
local alpha = 0       
local fadeOut = true  
  
function showPlayerWelcomeMessage()  
      addEventHandler( "onClientRender", root, showWelcomeMessage )  
      alpha = 0  
      fadeOut = true  
end  
  
function welcomeOnSpawn ( )  
      if source == localPlayer then  
       showPlayerWelcomeMessage()  
      end  
end  
  
addEventHandler ( "onClientPlayerSpawn", getLocalPlayer(), welcomeOnSpawn )  
            
function showWelcomeMessage()  
      local xOff = dxGetTextWidth ( 'San Andreas     ', 1.2, 'bankgothic' )  
      local xp, yp, zp = getElementPosition ()  
      local mins, hour = getTime ()  
      if mins > 0 and mins < 10 then  
       mins = '0'..tostring(mins)  
      end  
      local alivetime = getElementData(localPlayer, "alivetime") or 0  
      dxDrawText ( 'San Andreas\n'..getZoneName ( xp, yp, zp, true )..'\nВремя '..formatTimeFromMinutes(alivetime)..'\n'..tostring(mins)..':'..tostring(hour)..'', x-xOff, y-200, x,y, tocolor ( 255, 255, 255, alpha ), 1.2, 'bankgothic' )  
      if fadeIn then  
       alpha = alpha-10  
       if alpha < 10 then  
        fadeIn = false  
        removeEventHandler( "onClientRender", root, showWelcomeMessage )  
       end  
      end  
      if fadeOut then  
       alpha = alpha+5  
       if alpha > 245 then  
        alpha = 255  
        setTimer ( function () fadeIn = true end, 3000, 1 )  
        fadeOut = false  
       end  
      end  
end 
  

[h4x7o0r]

  
local x,y = guiGetScreenSize()  -- resolution is e.g 800 x 600 etc. 'z' isn't used. 
  
  

[myonlake]

local x,y = guiGetScreenSize()  -- resolution is e.g 800 x 600 etc. 'z' isn't used. 

That wouldn't return a nil value on the whole function, especially because he's not even using the z variable.

It's because you are running the code server-side. Renderable graphic functions are only available client-side for obvious reasons. Switch over to client-side by placing type="client" on your meta.xml script-node as follows.

<meta> 
     <script src="welcome.lua" type="client" /> 
</meta>