"How do you set dwgprops using AutoLisp?"

And the beginning of the answer is :

"You want to modify the Revision Number field on the Statistic tab of the
Drawing Properties dialog box do you?

This field is used by revision control or other drawing management software.
There is no simple method for editing this field. However, you can use the
following AutoLISP function to update this field.
Note: You must save the drawing prior to updating its revision number with
the following sample routine."

;;;;
;;;;Beginning of the AutoLISP routine
;;;
(defun add-record (/ Xrec Xname)
(setq Xrec '((0 . "XRECORD")
(100 . "AcDbXrecord")
(1 . "DWGPROPS COOKIE")
(9 . "")
)
)
(setq Xname (entmakex Xrec))
(dictadd (namedobjdict) "DWGPROPS" Xname)
)

(prompt "\nType in UPDREV to start this routine")
(defun c:updRev (/ xlist rev)
(setq Rev (getstring "\nEnter drawing Revision Number: "))
(setq xlist (dictsearch (namedobjdict) "DWGPROPS"))
(if Xlist
(progn
(dictremove (namedobjdict) "DWGPROPS")
(dictadd (namedobjdict) "DWGPROPS" (entmakex (subst (cons 9 Rev)
(assoc 9 xlist) xlist)))
)

(progn
(add-record)
(setq xlist (dictsearch (namedobjdict) "DWGPROPS"))
(dictremove (namedobjdict) "DWGPROPS")
(dictadd (namedobjdict) "DWGPROPS" (entmakex (subst (cons 9 Rev)(assoc
9 xlist) xlist)))
;(entmod (subst (cons 9 Rev) (assoc 9 xlist) xlist))
)
)
(princ)
)
;;;;
;;;;End of the AutoLISP routine
;;;

And it came from :
Victor Delgado

And, believe it or not, hot of the press.......
"I created a routine in 2002 for setting DwgProps...

<--- Start Of Lisp --->
;----------------------------------
; 2 Title
; 3 Subject
; 4 Author
; 6 Comments
; 7 Keywords
; 1 Hyperlink
; 8 Last saved by
; 9 Revision
; 40 Editing time
; 41 Creation time
; 42 Last modified time
; 90 Number of custom properties
; 300-309 Custom properties
;----------------------------------
(defun add-record (NUMBER / Xrec Xname)
(setq Xrec '((0 . "XRECORD")
(100 . "AcDbXrecord")
(1 . "DWGPROPS COOKIE")
(NUMBER . "")
))
(setq Xname (entmakex Xrec))
(dictadd (namedobjdict) "DWGPROPS" Xname)
)
(defun upddwgp (NUMBER STRING)
;(defun upddwgp (NUMBER / xlist STRING)
(setq xlist (dictsearch (namedobjdict) "DWGPROPS"))
(if Xlist
(progn
(dictremove (namedobjdict) "DWGPROPS")
(dictadd (namedobjdict) "DWGPROPS" (entmakex (subst (cons NUMBER STRING)
(assoc NUMBER xlist) xlist)))
)
(progn
(add-record NUMBER)
(setq xlist (dictsearch (namedobjdict) "DWGPROPS"))
(dictremove (namedobjdict) "DWGPROPS")
(dictadd (namedobjdict) "DWGPROPS" (entmakex (subst (cons NUMBER STRING)(assoc NUMBER xlist) xlist)))
;(entmod (subst (cons NUMBER STRING) (assoc NUMBER xlist) xlist))
)
)
(princ)
)
<--- End Of Lisp --->

<--- Start Example Function Call --->
(setq MYSTRING "This is my string")
(upddwgp 6 MYSTRING)
<--- End Example Function Call --->

Dan Landrum