function tablice (gracz, player, numery_tablicy)
if numery_tablicy then
account = getAccountName(getPlayerAccount( getPlayerFromName(gracz)))
local auto_gracza = getPedOccupiedVehicle(getPlayerFromName(gracz))
setVehiclePlateText( auto_gracza, tostring(numery_tablicy) )
if auto_gracza and account then
setAccountData  ( auto_gracza, "auto", account )

function PlateText(thePlayer,commandName,text)
    local Vehicle = getPedOccupiedVehicle(thePlayer)
    if Vehicle then
        if text then
            setVehiclePlateText( Vehicle, text )
        else
            outputChatBox("Musisz wpisa? tre??!",thePlayer)
        end
    else
        outputChatBox("Musisz by? w poje?dzie!",thePlayer)
    end
end
addCommandHandler("tablica",PlateText)

setElementData(...)