Lisp command "fillet" with radius for pline doesn't work !!

Hi, I hope this is not a stupid question...

I wonder why a simple lisp command line like this doesn't work...

Command: (command "fillet" "r" 2 "p" (entsel "\nSelect a polyline : ") )

Unknown command "P". Press F1 for help.

Thank you

The problem is that AutoLISP is calling the old format of commands; that it, to preserve compatibility with old routines. For your case, the FILLET command ends after fillet radius is set, so need to call it again to apply fillet operation. Also, please check what ENTSEL function return.

Adjust your code as below to work:

(command "[color=red]_[/color]fillet" "[color=red]_[/color]r" 2 [color=red]"_fillet"[/color] "[color=red]_[/color]p" [color=red](car [/color](entsel "\nSelect a polyline : ")[color=red])[/color])

However, I will write it like:

(setvar "FILLETRAD" 2)
(if (setq thePline (ssget "_:S" '((0 . "LWPOLYLINE"))))
(command "_FILLET" "_P" (ssname thePline 0))
)

Also look into initcommandversion

I see...Thanks so much !