On 2025-02-02 08:38, Uwe Brauer via General discussions about Org-mode. wrote:
Vale, entendido (supongo que eres español, porque usas la palabra movil,
¿correcto?) 
Yes :D
  but let's keep the discussion in the mailinglist in English so other people can participate, or benefit from it
Thanks, but I cannot find the function

my/set-property-with-inactive-timestamp

In your code, 

In fact you don't need ~my/get-inactive-timestamp~ for your pursposes, try with this one:

#+begin_src emacs-lisp
(defun my/org-add-timestamp-on-heading ()
  (save-excursion
    (org-back-to-heading)
    (org-edit-headline (format-time-string "<%F>"))))

(add-hook 'org-insert-heading-hook 'my/org-add-timestamp-on-heading 'append)
;; to remove it
;; (remove-hook 'org-insert-heading-hook 'my/org-add-timestamp-on-heading)
#+end_src

but here you have for curiosity, there you can see compact strftime format to construct a inactive timestamp

[1]

#+begin_src emacs-lisp
(defun my/get-inactive-timestamp ()
  (format-time-string "[%F %a %R]"))

(defun my/set-property-with-inactive-timestamp (property)
  (interactive)
  (org-set-property property (my/get-inactive-timestamp)))
#+end_src