Same Product Images In Order Confirmation - WooCommerce

Heya,

I’m making an order confirmation email (WooCommerce), however, for some reason, the image of the products is always showing the first one.
 

I am using this for the image:
{{ event.extra.Items.0|lookup:'$extra'|lookup:'Images'|lookup:'0'|lookup:'URL'|default:'' }}

I have a feeling that the “0” for the item number in the array doesn’t go up for each cycle when displaying every product in the order, but I’m not sure how I can make it do so.

Can anyone please give an idea?