Add custom Ultimate member fields Column to Users list table on WordPress

um_user_column_backend.php

<?php

// Display UM Country Column Label
function um_add_meta_user_table( $column ) {
    $column['country'] = 'Country';
    return $column;
}

add_filter( 'manage_users_columns', 'um_add_meta_user_table' );

// Display UM Country Column Value
function um_add_meta_user_table_row( $val, $column_name, $user_id ) {
    if ($column_name == 'country') {
        return get_user_meta( $user_id, 'country', true );
    }
    return $val;
}

add_filter( 'manage_users_custom_column', 'um_add_meta_user_table_row', 10, 3 );

// Make the Country column sortable
function um_user_sortable_columns( $columns ) {
    $columns['country'] = 'country';
    return $columns;
}

add_filter( 'manage_users_sortable_columns', 'um_user_sortable_columns' );