Childtheme .mo files PLSSS HELP

Hi all,

I am starting to get desparate so I really hope the community can help me here.

I have created a child theme for one of the elegantthemes.
(This childtheme does not use a .pot file)

Since I work with a wpmu setup and I run multiple sites on this I cannot change the wp-config file only the childtheme files.

I have been reading the wp codex and found this:

https://codex.www.ads-software.com/Function_Reference/load_child_theme_textdomain

And tried to play arround with the $domain and $path in a new functions.php file which I created in the childtheme.

However it does not translate..

This is the closest I come to what I think should be working:

<?php
/**
 * Setup My Child Theme's textdomain.
 *
 * Declare textdomain for this child theme.
 * Translations can be filed in the /lang/ directory.
 */
add_action( 'after_setup_theme', 'my_child_theme_setup' );
function my_child_theme_setup(){
    load_child_theme_textdomain( 'DeepFocus-Olsberg', get_stylesheet_directory() . '/lang' );
}
?>

Please anyone help ??
Thanks

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