Try this:
rootElement = getRootElement()
function money()
outputChatBox(getPlayerName(source).." has logged in!", 5, 255, 0, 0, font)
setElementRotation(source, 0, 0, 270)
givePlayerMoney( source, 1000 )
end
addEventHandler("onPlayerLogin", rootElement, money)
'onPlayerLogin' returns source as the connected player, dont need to define it.