Custom theme logo

I have a setting page in my custom theme with a logo setting : $name = 'theme_xxx/logo'; $title = get_string('logo', 'theme_xxx'); $description = get_string('logodesc', 'theme_xxx'); $setting = new admin_setting_configstoredfile($name, $title, $description, 'logo'); $setting->set_updatedcallback('theme_reset_all_caches'); $settings->add($setting); when I try to print out the logo <?php echo $PAGE->theme->settings->logo;?> all I get is the name of the file but not the path. (/logo.png ) I have no Idea where the search is saved and what to do next.