I am using a plugin to limit what posts authors see and it doesn't work with …

I am using a plugin that limits what posts authors see. In fact, it only shows them their posts that they have published. I have looked at the code and it is this.

<?php
/*
Plugin Name: Simplify Post Edit List
Description: Show only the author's posts in the edit list
Version: 0.1
License: GPL
Author: Sarah Gooding
Author URI: https://untame.net
*/

function mypo_parse_query_useronly( $wp_query ) {
    if ( strpos( $_SERVER[ 'REQUEST_URI' ], '/wp-admin/edit.php' ) !== false ) {
        if ( !current_user_can( 'update_core' ) ) {
            global $current_user;
            $wp_query->set( 'author', $current_user->id );
        }
    }
}

add_filter('parse_query', 'mypo_parse_query_useronly' );

?>

What would I put in place of ‘author’ so that the co-author can see the posts they have co-authored because currently only the first author sees the posts.

Thanks

Garret
eWebify

https://www.ads-software.com/plugins/co-authors-plus/