Webform block - copy node title to hidden field

webform_copy-node-title

function the_aim_custom_form_alter(&$form, &$form_state, $form_id) {
  switch ($form_id) {
    //apply for job form
    case 'webform_client_form_38':
      //get title of current node and insert into webform field
      $current_object = menu_get_object();
      if(isset($current_object->title)) {
        $job_title = $current_object->title;
        $form['submitted']['vacature']['#default_value'] = $job_title;
      }
      break;
  }
}