Recieving array fields

Hello,

Can can you fix this part of code that we can recieve the fields which CF7 return as an array?

/admmin/class-activetrail-cf7-admin.php:416

was:
$clean_value = sanitize_text_field($_POST[$parts[0]]);

is:
$clean_value = (is_array($_POST[$parts[0]])) ? implode(',', $_POST[$parts[0]]) : sanitize_text_field($_POST[$parts[0]]);