Webhook not displaying data from hidden field

Replies: 0

I have built something with webhooks but for some reason it does not submit the data. I want to achieve that the [your-name] field is being split into 2 hidden fields. This is to eradicate too many steps in CF7

add_action( 'wpcf7_before_send_mail', 'wpcf7_strip_name', 10, 1 );
function wpcf7_strip_name($contact_form){

   $submission = WPCF7_Submission::get_instance();
   $posted_data = $submission->get_posted_data();
    if ($posted_data["your-name"]){
    $name = trim($posted_data["your-name"]);
    $last_name = (strpos($name, ' ') === false) ? '' : preg_replace('#.*\s([\w-]*)$#', '$1', $name);
    $first_name = trim( preg_replace('#'.$last_name.'#', '', $name ) );

  // Set default value for last name if none is provided   
      if ($last_name == NULL ){
      $last_name = "Not Provided";
      }
    }
}

In my Contact Form I have the following hidden fields

[hidden first_name]
[hidden last_name]

Both fields are declared in the email too as [first_name] [last_name] but the name-stripping does not pull through