I think the new engine does have problems parsing when there is just an empty parameter sometimes. (Atleast it used to, it may be fixed now, who knows)

You should be using setAni("ganiname", NULL), regardless, because you're using gscript2.

Also, considering you are now using gscript2, this post should be moved.

Wouldn't a stake npc and some triggers be better?

If you don't understand how the old script detects stake's. ... practice.
uh.. if i find the example of how to figure it out, I'll post it later.

well, this is an old thread :P
But anyway, I plan to use the trigger idea, it's nicer, and I can do it locally, so only plaers with the hammer wll be able to get through certain areas