Home Page META tags

[sunnyokanagan]

I want to change the default Zen Cart! title of my home page.

In a copy of your /includes/languages/english/meta_tags.php file find this section to fill in:

// Home Page Only:
  define('HOME_PAGE_META_DESCRIPTION', '');
  define('HOME_PAGE_META_KEYWORDS', '');

  // NOTE: If HOME_PAGE_TITLE is left blank (default) then TITLE and SITE_TAGLINE will be used instead.
  define('HOME_PAGE_TITLE', ''); // usually best left blank

My default looks like thsis

// Home Page Only:
  define('HOME_PAGE_META_DESCRIPTION', '');
  define('HOME_PAGE_META_KEYWORDS', '');
  
  // NOTE: If HOME_PAGE_TITLE is left blank (default) then TITLE and SITE_TAGLINE will be used instead.
  define('HOME_PAGE_TITLE', ''); // usually best left blank

but if I change to this, my site just goes blank

// Home Page Only:
  define('HOME_PAGE_META_DESCRIPTION', 'my description here');
  define('HOME_PAGE_META_KEYWORDS', 'my keywords here');
  define('HOME_PAGE_TITLE', 'my title here');
// NOTE: If HOME_PAGE_TITLE is left blank (default) then TITLE and SITE_TAGLINE will be used instead.
// usually best left blank

What am I missing please?