Help with timed respawn script

[OminousVoice]

I'm attempting to script a custom npc to spawn and despawn at certain times each day. The npc is a ghost who only appears at night and will return at 8pm even if the player has defeated her previously. So I figured this might achieve that:

 

Scriptname WoodcuttersWifeRespawnScript extends Actor

GlobalVariable Property GameHour  Auto

Function Enable (bool abFadeIn = false) native

Function Disable (bool abFadeOut = false) native

Function Resurrect() native

bool function isdead() native

bool function SpawnTime()
if GameHour.GetValue() == 20.0
		Self.Enable()
 	endif
if GameHour.GetValue() == 7.0
		Self.Disable()
endif
endFunction

bool function ResurrectTime()
if GameHour.getValue() >= 20.0 && self.isdead()
	self.resurrect()
endif
	endfunction

 

Unfortunately nothing happens in game. The npc dosen't enable (and resurrect if need be) at 8pm, nor does she disable at 7am. I'll add a couple of debug messages and see if any of these functions are being called, but in the mean time can anyone see if there's something amiss with my script? Any help would be greatly appreciated.

[OminousVoice]

UPDATE: I added some debug.trace messages, tested, and checked the log. I found this:

 

[07/29/2012 - 02:06:22AM] warning: Variable ::gametime_var on script WoodcuttersWifeRespawnScript loaded from save not found within the actual object. This variable will be skipped.

 

I have no idea what this means nor how to alleviate it. Once again any help would be greatly appreciated.