code: public function setField($label, $value, $position=false)
      {
          return $this->page->setField(new SelectByLabelOrName($label), $value, $position);
      }
docs: Sets all form fields with that name.
  
  @param string $label   Name or label of field in forms.
  @param string $value   New value of field.
  
  @return bool        True if field exists, otherwise false.