getpolyvtx해결됨

(defun GetPolyVtx(EntList / VtxList)
(setq VtxList ‘())
(foreach x EntList
(if (= (car x) 10)
(setq VtxList (append VtxList (list (cdr x))))
)
)
VtxList
) 이렇게 덧붙여주니까 해결이되네요 nanna님말씀이 맞습니다