playSound3D

[Padul]

addEventHandler("onClientKey",root,function(button,pressed)
	if isPlayerInVehicle(localPlayer) then
		local veh=getPlayerOccupiedVehicle (localPlayer)
		local x,y,z = getElementPosition(veh)
		if button=="8" and pressed==true then
			triggerEvent("wlaczPoganiacz",root,veh,x,y,z)
		elseif button=="8" and pressed==false then
			triggerEvent("wylaczPoganiacz",root,veh)
		end
	end
end)

addEvent("wlaczPoganiacz",true)
addEventHandler("wlaczPoganiacz",getResourceRootElement(getThisResource()),function(veh,x,y,z)
	poganiacz=playSound3D("zyla.ogg",x,y,z,true)
	attachElements(poganiacz,veh)
end)

addEvent("wylaczPoganiacz",true)
addEventHandler("wylaczPoganiacz",getResourceRootElement(getThisResource()),function(veh)
	destroyElement(poganiacz)
end)

how can i make it play for all player on server? not just me

[Mr.Loki]

triggerServerEvent

triggerClientEvent

[Padul]

if i do trigger server then client event it will be still the same rootElement so it will be working only for me

[Mr.Loki]

Then simply change it from resourceRoot to root... because you are dealing with elements outside of the resource.