Nice, that works on my end, thanks. To speed setting my null objects (it's taking a long time to resize and reposition the spheres as I move in on the point of interest down to the vertice leve), can I use this same pointConstraint to first select the null object, then shift select a vertice, then add the constraint to zip the location of the null to the vertice? I'll just try that. Thanks, and if others have a clue how to get nulls 2 and 3 to jump in, that would be awesome. Some truly generous souls out there helping us newbs, big thanks. Benjy