I want to add heading on the barcode like

300 W Fan Heater
on top of my barcode using Zend Library in CodeIgniter
So far I am doing
private function set_barcode($code)
{
//load library
$this->load->library('zend');
//load in folder Zend
$this->zend->load('Zend/Barcode');
//generate barcode
Zend_Barcode::draw('upca', 'image', array('text'=>$code), array());
}
Cant find anything, that add heading on top of barcode