Add to cart button not work in modal joomla!

[pdutie94]

- First , sorry for my english is not good . 
- I want to create functional products quick look , I 've been using modal in joomla , this is the button you click will display product information in the modal : "<a class="quick-view modal" rel="{size: {x: 917, y: 716}, handler:'iframe'}" href="<?php echo $product->link . $ItemidStr.'&tmpl=component'; ?>"><i class="fa fa-external-link"></i></a>" .
- It works fine , but when I click add to cart button , the product of modal is not added to cart, and I can not increase or decrease the number of products in the modal .
Hope everyone can help me . Thank you!

[VMTemplates.net]

Hi,

any URL where we can see it?
Joomla/VirtueMart version?

Thanks,
J.