Выделение инстансных объектов.

 ------------------------------------------------------
arInst = #()
arSel = selection as array
if arSel.count != 0 do(
    for i in arSel do(
        InstanceMgr.GetInstances i &rptInstances
        join arInst rptInstances
        )
    select arInst
    )
 ------------------------------------------------------
Источники:
ersindemir
forums.cgsociety
forums.cgsociety
docs.autodesk.com