parsing regex with slashes fails

[cgx-system]

Hi,
I'd like to filter by a field containing a file path with slashes, like path/to/my/file_<id>.tld, with the <id> part as a wildcard.
I've tried aqp({ file: '/^path/to/my/file_.+\\.tld/' }) but it splits the string in an array :

{
  file: { '$in': [ /^path/, /my/ ] }
}

Is there a way to pass slashes in a regex ? I've also tride to urlencode the string or escape the slashes with \ but it doesn't work either.