How to point image variable for the template directory in 'root/aaa/' folder?

[mc12345678]

If in the admin and trying to reach the store's modules directory where the "my_mod" info is installed in the template override directory in the modules directory, I think the following would work:

$this->variable = $template->get_template_dir('bbb.jpg', DIR_FS_CATALOG . DIR_WS_MODULES, $template_dir, '') . '/bbb.jpg';