SSE Creating Script to Activate XMarker after quest stage

[akspyder]

I trying to create a mod that cleans up Thirsk Mead Hall after you defeat the chief. I created an XMarker that I will link as the parent to all the changes I make to the area. Currently my coding looks like but I can't get it to complie. Any help would be awesome.

 

Scriptname TMHPHProgressScript extends ObjectReference

Property THPHenabler Auto
Quest property DLC2MH02 Auto

Event OnLoad()
If DLC2MH02.IsStageDone(200)
THPHenabler.Enable()
endif

EndEvent