Custom field in content module

-- HikaShop version -- : 4.7.2
-- Joomla version -- : 4

Hi
I try to show custom field (table product) in hika content module. I made an override in product / listing_img_decription file, but no code is working.
For display on product view I use that code (and works well):

<?php  
  if(!empty($this->element->fieldname)) {
	echo '<div class="someclass">' . $this->element->fieldname . '</div>'; 
}
?>

Thank you. This works

<?php  
  if(!empty($this->row->fieldname)) {
	echo '<div class="someclass">' . $this->row->fieldname . '</div>'; 
}
?>