Replace form fields by name with uppercase characters - WP Contactform 7

wpcf7_add_action.html

<?PHP add_action( 'wpcf7_before_send_mail', 'wpcf7_add_text_to_mail_body' );

function wpcf7_add_text_to_mail_body($contact_form){

  $submission = WPCF7_Submission::get_instance();
  
    if ( $submission ) {
        
      // Get POST data
      $posted_data = $submission->get_posted_data();
      // get mail property
      $mail = $contact_form->prop( 'mail' ); // returns array 
  

      // add content to email body
      $mail['body'] .= ' - ' . implode(", ", $posted_data);
      // Replace exsisting content
      $mail['body'] = str_replace('[your-name]', strtoupper($posted_data['your-name']), $mail['body']);
   }

    // set mail property with changed value(s)
    $contact_form->set_properties( array( 'mail' => $mail ) );
?>