[求助][讨论]将两个图形的组编问题

yfywk

(DEFUN C:Test ()
  (SETVAR "CMDECHO" 0)
  (SETQ LAY (GETVAR "clayer"))
  (SETQ OS (GETVAR "OSMODE"))
  (SETQ N2 (GETVAR "DIMSCALE"))
  (SETVAR "OSMODE" 4799)
  (SETQ TEMPERR *ERROR*)
  (SETQ *ERROR* TRAP)
  (COMMAND "undo" "be")
  (command "line" "0,1.75" "0,-1.75" "")
  (setq T1 (entlast))
  (COMMAND "line" "-1.75,0" "1.75,0" "")
  (setq T2 (entlast))
  (COMMAND "group" "c" "*" "" "T1" "T2" "")
  (COMMAND "undo" "e" "")
  (PRINC)
)

为什么不能将其成组?错在哪里?

初学,请予以指导!