How can translate in spanish

i download the file geodirlocation-es_MX.po open with poe editor and save, generate the geodirlocation-es_MX.mo, then upload in wp-content/plugins/geodirectory/geodirectory-languages

i go the wp section /setting/general/languaje and dont see spanish languaje

i the config.php don’t see the next line code

define (‘WPLANG’, ”);

to

define (‘WPLANG’, ‘xx_XX’); <- Replace the xx_XX with your own language’s shortcode!

the link i use: https://wpgeodirectory.com/docs/translate-core/

thanks