[python] chceck chr is alive

Hi. I want to do some hack in python. I have to check, that other players in range (10000) are alive or not. I got some code but its not working good for me. Is there any different method of function to chceck other players HP or status (dead/alive) by VID?

Code:

o=player.GetMainCharacterIndex()
for i in xrange(o-150000, o+150000):
	dys = player.GetCharacterDistance(i)
	if dys > 0 and dys < 7500:
		a = chr.GetInstanceType(i)
		if a==6:
			imie=chr.GetNameByVID(i)
			chat.AppendChat(7,"# player in range: "+str(imie)) +" - dys: "+str(int(dys)))
			#====================== work but only in ~7500 and loosing my char target ======================
			player.SetTarget(i)
			if player.GetTargetVID() != 0:
				chat.AppendChat(7,"# alive by target")
			else:
				chat.AppendChat(7,"# dead by target")
			#====================== only for mobs? ======================
			info = chrmgr.GetVIDInfo(i)
			chat.AppendChat(7,"# isalive: "+info.split("isAlive=")[1][0])

part "only for mobs" isnt working well:
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