(Defun c:mybh (/ e e1 la ps si smx ss ssh)

(command "_undo" "be" "")
(command "layer" "m" "HATCH" "")
(if (and   
   (princ "n選擇要填實(shí)的柱子<退出>：")
   (setq
   ss  (ssget (list '(0 . "lwpolyline") ))
   )
)
(progn
   (setq smx (sslength ss)
     si 0
   )
   (while (< si smx)
   (setq e (ssname ss si)
     si (1+ si)
   )
   (if t
   (progn
     (if nil;(setq e1 (entnext e))
      (command ".-bhatch" "p" "s" "s" e e1 "" "")
      (command ".-bhatch" "p" "s" "s" e "" "")
     )
     ;(@htas nil)
   )
   )
   )
)
)
(command "_undo" "e" "")
)