Where is the function "Decreasing field amount in stock on order" ?

[minista]

VirtueMart 3.0.14
Joomla 3.5.1 Stable

Hi everyone

Im looking for the function and the file where the code is about decreasing the field amount in stock when someone orders a product. I Need to add another code that someting else also will decrease in my database.

Where do i find this code?

Thanks!

[K&K media production]

You should find it inside the order model:

administrator/components/com_virtuemart/models/orders.php