Can I add stock control to my products in the payment gateway?

Is there any way i can add stock control to my products in the payment gateway

Basically this is closest workaround we have when it comes to a stock control(It is not applied directly to the payment integration):

1)Add the Inventory widget: http://widgets.jotform.com/widget/inventory

You would need to add each time this widget to create a single product:

2) Add the Calculation widget on your form:

3) Make the calculation on wizard of the Calculation widget :

4) After this, you will need to pass the amount to your Paypal field, you may take a look at my example form here.

Just to let you know, a total amount will be passed to Paypal side, there will not be description of the each product since it is not apply directly to the payment integration.