attempt to concatenate a boolean value [ getPlayerName ]

[Aristates]

Where Problem. getPlayerName(source) don't getPlayerName(localPlayer)

    function directxName() 
    des = getPlayerName(source).." " 
        dxDrawText(des, (screenW * 0.0500) + 1, (screenH * 0.4700) + 1, (screenW * 0.2175) + 1, (screenH * 0.4950) + 1, tocolor(0, 0, 0, 255), 1.00, "default-bold", "center", "center", false, false, false, true, false) 
        dxDrawText(des, screenW * 0.0500, screenH * 0.4700, screenW * 0.2175, screenH * 0.4950, tocolor(254, 254, 254, 254), 1.00, "default-bold", "center", "center", false, false, false, true, false) 
        dxDrawImage(screenW * 0.0175, screenH * 0.4633, screenW * 0.0275, screenH * 0.0317, "data/img/jn.png", 0, 0, 0, tocolor(92, 231, 0, 168), false) 
    end 

[jingzhi]

What are you trying to do? source is a nil value here

[starksZ]

    function directxName() 
    des = getPlayerName(getLocalPlayer()).." " 
        dxDrawText(des, (screenW * 0.0500) + 1, (screenH * 0.4700) + 1, (screenW * 0.2175) + 1, (screenH * 0.4950) + 1, tocolor(0, 0, 0, 255), 1.00, "default-bold", "center", "center", false, false, false, true, false) 
        dxDrawText(des, screenW * 0.0500, screenH * 0.4700, screenW * 0.2175, screenH * 0.4950, tocolor(254, 254, 254, 254), 1.00, "default-bold", "center", "center", false, false, false, true, false) 
        dxDrawImage(screenW * 0.0175, screenH * 0.4633, screenW * 0.0275, screenH * 0.0317, "data/img/jn.png", 0, 0, 0, tocolor(92, 231, 0, 168), false) 
    end 

The source is nil in client, Use getLocalPlayer() and test this code.

[Aristates]

don't localplayer. my full new code in guiSetText value don't work.

addEvent("set", true) 
addEventHandler("set", root, function(değer) 
guiSetText(labels, tostring(değer)) 
end 
) 

function getPlayerNames() 
player = getPlayerName(source) 
triggerClientEvent("set", resourceRoot, player) 
end 
addEventHandler("onPlayerJoin", root, getPlayerNames) 
  

[Rockyz]

-- # Server Side : 
  
function getPlayerNames (    ) 
triggerClientEvent ( "set", source, getPlayerName ( source ) ) 
end 
  
addEventHandler ( "onPlayerJoin", root, getPlayerNames ) 
  
-- # Client Side : 
  
addEvent ( "set", true ) 
addEventHandler ( "set", root, function ( p ) 
guiSetText ( labels, tostring ( p ) ) 
end 
) 

[Noki]

If you want to do something as a player joins, use onClientPlayerJoin. It triggers client-side for every player who joins, par the local player. No need for client and server-sided events.