Script Fehler..?

[2013-03-02 17:55:52] WARNING: Harndrang/piss.lua:11: Bad argument @ 'getElementHealth' [Expected element at argument 1, got nil]
[2013-03-02 17:55:52] ERROR: Harndrang/piss.lua:11: attempt to perform arithmetic on a boolean value
[2013-03-02 17:56:58] WARNING: Harndrang/piss.lua:18: Bad argument @ 'killTimer' [Expected lua-timer at argument 1, got function]
[2013-03-02 17:57:20] WARNING: Harndrang/piss.lua:18: Bad argument @ 'killTimer' [Expected lua-timer at argument 1, got function]

function piss_meldung(player)


	outputChatBox ( "Deine Blase füllt sich such dir ein Platz und entleere sie!", player, 125, 0, 0 )
	setElementHealth (player, getElementHealth(player) - 10)
end
setTimer ( piss_meldung, 45000, 1 )