I have some selected elements:
(setq sel (ssget))
, ok just one element
(setq n (ssname sel 0))
(setq vla vlax-ename->vla-object n)
I make new block definition
(setq blocks (vla-get-Blocks active_document))
(setq block_def (vla-add blocks (vlax-3d-point pt) "blockName"))
How to add selected element n to block defenition block_def?