Problem z teleportacją

Options:

	XMax: 2000
	XMin: -2000
	Y: 156
	ZMax: 2000
	ZMin: -2000

command /Boss [<text>]:
	executable by: console
	trigger:
		set {_X} to random integer between {@XMax} and {@XMin}
		set {_Y} to {@Y}
		set {_Z} to random integer between {@ZMax} and {@ZMin}
		set {_Tp.Boss} to location at {_X}, {_Y}, {_Z} in world "world"
		send "Ustawiono lokacje bossa" to all players
		if biome at {_Tp.Boss} is not ocean or river or deep ocean:
			loop blocks under {_Tp.Boss}:
				if loop-block is not water or lava or air:
					set {_Tp.Boss} to location at {_X}, loop-block's y-location+1, {_Z} in world "world"
					spawn a Zombie at {_Tp.Boss}

Czy ktoś wie jak to naprawić? Nadal tworzy Zombie w wodzie.