First of all, as far as I know there is no "panic link height". Instead, you are defining a "Panic link region", a volume in space, and a panic link is triggered when you enter that volume.
Also, as Karkadann indicated, the volume you give in Blender is not actually the one Uru will use. The effective region will be the
convex hull of the region you gave. So you should make your region convex, to ensure you see what Uru actually uses. The reason for this is that with convex hulls, it's computationally much easier to check whether you are inside or outside the region.