Here’s a version with your file (as a regular gh definition, not a ghplayer one):
last_deform.gh (1.4 MB)
Another alternative is instead of using Grab to move the points in Grasshopper, to reference the cage from Rhino and then move the points in Rhino.
last_deform2.gh (3.9 KB)
last_deform2.3dm (3.9 MB)
