how to set a key in an article.

[Uwe Brauer]

Hello

When reading an article (mail/news) describe-mode

Tells me that I am in article-mode.

I want to bind the function icalendar-extract-buffer to some
key.

I tried 
 (add-hook 'gnus-article-mode-hook 'my-article-keys)
 (defun my-article-keys ()
 (interactive)
   (local-set-key "C-\\" 'icalendar-extract-ical-from-buffer))

Or 
  (local-set-key [(control c) i]  'icalendar-extract-ical-from-buffer)


But it does not work. What shall I do?

Uwe Brauer