Email Subject made from several Contact Form Parameters

Hello,

I have read this thread https://kriesi.at/support/topic/email-subject-from-contact-form-subject/ and I manage to modify it a bit to suit my needs which is a composition of different parameters. Here it is :

add_filter('avf_form_subject','avia_change_mail_subject', 10, 3);
function avia_change_mail_subject($subject, $new_post, $form_params) {
$subject = urldecode($new_post['6_1'].'+'.$new_post['5_1'].'+'.$new_post['1_1']);
return $subject;
}

I decided to share it because I guess it can be usefull to others who would want to do the same