How to enable /* Local variables */

I have added my own little mumamo c-org-mumamo-mode so that
I can embed org-mode snippets inside a c-file comment. " use +{ ... }+ brackets
to mark org-mode.
Now the problem I have is that the /* Local Variables: */ of the
test.c dont get propagated to c-mode. The local variables are
ignored. How can I enable so that c-mode gets the local variables?
-- Konrad

mumamo-fun.el:
...
(defun mumamo-chunk-c-org(pos min max)
  "Find +{ ... }+. Return range and `org-mode'.
See `mumamo-find-possible-chunk' for POS, MIN and MAX."
  (mumamo-quick-static-chunk pos min max "+{" "}+" t 'org-mode t))

;;;###autoload
(define-mumamo-multi-major-mode c-org-mumamo-mode
  "Turn on multiple major modes for C with main mode `c-mode' and comment embedded org-mode snippets. "
  ("C-org Family" c-mode
   (mumamo-chunk-c-org
    )))
...

test.c:
/*+{
This is org-mde
}+
*/

func() {}

/*
Local Variables:
c-basic-offset:4
indent-tabs-mode:nil
End:
*/