Anyone got CHANGED_REGION to work?

I have this thing I sit on and can fly around on. I want to tell when I enter a new region.

So I set up:

changed(integer change)
{

llOwnerSay((string)change);

if ( change & CHANGED_REGION )
{
if ( landing_point_region == llGetRegionName() )
{
llWhisper(0, "Over known region/sim - landing may work again.";
}
else
{
llWhisper(0, "Leaving known region/sim - landing may not work.";
}
}
}

The problem is that the change of region seems to be detected on some kind of random basis and doesn't always work. Does anyone have any experiece with this this event?

Thanks - D

Perhaps you're trying it over no-script land?