How to set a PHP value to my hidden field?

Hello buzztone,

I found a solution, but I do not know if it is the best solution.

I used the plugin Contact Form 7 Modules (https://wordpress.org/plugins/contact-form-7-modules/)

…and followed this tutorial: http://hookr.io/filters/wpcf7_hidden_field_value_id_att/

…which allows me to do something like this:

function set_hidden_field_referencename($value) {
    global $project;
    return $project->Name;
}
add_filter('wpcf7_hidden_field_value_referencename', 'set_hidden_field_referencename');

The value $project->Name is set into my hidden field and the data is saved in Contact Form DB 🙂