(princ "\nSelect a dimension 選擇尺寸 :")
(if (and (setq s1
(ssname (ssget "_:S:E" '((0 . "DIMENSION"))) 0)
)
(setq ent (entget s1))
(= (cdr (assoc 0 ent)) "DIMENSION")
(progn
(setq dnm (cdr (assoc 3 ent)))
(command "-DIMSTYLE" "R" dnm)
(princ)