How do display username/shop name in product list - back end ?

[kuli-kode]

hi, how to add the username/shop name on the list of products in the backend virtuemart pages ?

\administrator\components\com_virtuemart\views\product\tmpl\default.php

I've pasted the code :

Code Select Expand

<th><?php echo $this->sort('ju.username', 'COM_VIRTUEMART_USERNAME')  ?></th>

and display the td column :

Code Select Expand

<td align="left">
<?php 
echo $row->username;
?>
</td>

but it does not work, please help

thanks

---------------------------------------------- EDIT SOLVED -----------------------------------------

Code Select Expand

<td align="left">
<?php 
       echo $lists['vendors'] = Shopfunctions::renderVendorList($product->virtuemart_vendor_id);
?>
</td>

but how to disable select box ?