Activate Revisions

Hi, I currently have the Pro version of the plugin and I’m wondering why Revisions are not activated and displayed in a Revisions meta box.

With a plugin like this, Revisions are more crucial to me than on other types of post, as if one of my team edits the code and gets it wrong, we’re unable to roll back to a previous version unless we set up GIT commits, which we don’t want to do on our smaller client sites.

I’ve tried to add the code for revisions (see below), but it does not seem to function correctly. Not sure what I’m doing wrong.

Can you please provide the code to make revisions work on Saving of each file.

Thanks
Ostii

<?php
function enable_custom_code_revisions( $args ) {
    $args['supports'][] = 'revisions';
    return $args;
}
add_filter( 'register_post_type_args', 'enable_custom_code_revisions', 10, 1 );

function add_custom_codes_revisions_meta_box() {
    global $post;

    if ( ! $post ) return;

    $revisions = wp_get_post_revisions( $post->ID );

    if ( count( $revisions ) > 0 ) {
        add_meta_box(
            'revisionsdiv',
            __('Revisions'),
            'post_revisions_meta_box',
            'custom-code',
            'normal',
            'core'
        );
    }
}
add_action('edit_form_after_title', 'add_custom_codes_revisions_meta_box');

function custom_code_revision_limit( $num, $post ) {
    if ( $post->post_type === 'custom-code' ) {
        return 20; // Set the number of revisions to keep for the 'custom-code' post type.
    }
    return $num;
}
add_filter( 'wp_revisions_to_keep', 'custom_code_revision_limit', 10, 2 );