Exclude files with ctags and vim

Question

I am trying to use vim with ctags but I want to exclude files. I added the next line to the vimrc file:

au BufWritePost *.c,*.cpp,*.h,*.go,*.py,*.m silent! !ctags -R --exclude="*.symbolsmap.h" . &

(trying to exclude all files with suffix of .symbolsmap.h)

but still when pressing Ctrl+] I am jumping to one of the symbolsmap.h files.... Any idea what I am doing wrong ?

(using mac... if it matters...)

> ctags --version
Exuberant Ctags Development, Copyright (C) 1996-2009 Darren Hiebert
  Compiled: Apr 18 2022, 11:57:30
  Addresses: <[email protected]>, http://ctags.sourceforge.net
  Optional compiled features: +wildcards, +regex