permissive servlet not getting invoked from webserver

Hi ,

I am trying to implement permissive servlet, as advised in below mentioned page :

https://docs.adobe.com/docs/en/dispatcher/permissions-cache.html

I have deployed the servlet and made changes as advised, however I do not see my servlet getting the HEAD request.

My loggers never get printed.

I have /allowAuthorized "0" in cache section.

and below is part for /authchecker

/auth_checker
  {
  # request is sent to this URL with '?uri=<page>' appended
  /url "/bin/permissioncheck"
       
  # only the requested pages matching the filter section below are checked,
  # all other pages get delivered unchecked
  /filter
    {
    /0000
      {
      /glob "*"
      /type "deny"
      }
    /0001
      {
      /glob "/content/*.html"
      /type "allow"
      }
    }
  # any header line returned from the auth_checker's HEAD request matching
  # the section below will be returned as well
  /headers
    {
    /0000
      {
      /glob "*"
      /type "deny"
      }
    /0001
      {
      /glob "Set-Cookie:*"
      /type "allow"
      }
    }
  }

Has anyone already been able to implement it?