I can manipulate standard AutoCAD Block Attributes in Lisp
I know that Multi-View Blocks are primarily used for tagging AEC objects... so this most likely is stretching the intent.
... how can I gain access to Multi-View Block Attributes?
looking at a dump of an Multi-View Block with the following... access to the attributes isn't readily apparent.
(vlax-dump-object (vlax-ename->vla-object (car (entsel))) t)