VM admin media Thumb

[Rolandos]

Hello,

In the adminpanel of VM-products I want to have a thumbnail of the product when hovering the vm-media icon.

I tried to put this line of code <?php echo $productfile->displayMediaThumb();?>

into: administrator/components/com_virtuemart/views/product/tmpl/default.php line 140

but it ain't working. My php knowledge is zero, so maybe someone can help me with this.