Translate Strings

Hi there,

I’m wanting to change some strings throughout the plugin and am unable to do so. For example, I’m trying to change strings this way:

/*-------------------------------------------------------------------------------
	Modify Strings
-------------------------------------------------------------------------------*/
function filter_translations($translation, $text, $domain) {
    if ($domain ==  GEODIRECTORY_TEXTDOMAIN ) {
        switch ($text) {
            case 'Send Enquiry':
                $translation = 'Send Inquiry';
                break;
        }
    }

    return $translation;
}
add_filter('gettext', 'filter_translations', 20, 3);

Do you guys know what the problem might be or a better way for me to change strings?

Thanks,
Jonah