Help with custom FIELDS or diesel expression?

[neuri]

I want to put the Revisions of a file name in to my title block using FIELDS so it auto updates everytime I revise the drawing but i only want the last letter of the file name.

 

$(substr,$(getvar,dwgname),5,$(-,$(strlen,$(getvar,dwgname)),8))

 

I have been using this but my file names vary according to project names, is there a simpler way to just get the last letter of every file name?

[SLW210]

I have moved your thread to the CUI, Hatches, Linetypes, Scripts & Macros Forum.

 

I have a thread or two around somewhere explaining how that DIESEL works to modify the DWGNAME. If I get time, I'll see what I can find.

 

What you want, may need LISP.

 

Can you post some examples and a .dwg?

 

 

[BIGAL]

Hmmm

 

(setq str (cdr (assoc 1 (entget (car (entsel "\nPick a text "))))))
(setq tlast (substr str (strlen str)))

 

[neuri]

Thanks, but I googled abit more while waiting for a reply and found this expression that worked.

 

It is below for anyone else who might be searching for something similar.

 

$(substr,$(getvar,dwgname),$(-,$(strlen,$(getvar,dwgname)),4),1)

 

 

Edited June 24, 2022 by neuri

[SLW210]

Sorry, I was busy last few days.

 

See this thread...shortening fields in attributes - AutoCAD Drawing Management & Output - AutoCAD Forums (cadtutor.net)