- JotForm Support
**Kevin_G**Hi,

You can find how to add a quantity field to your products on this guide :

http://www.jotform.com/help/225-How-to-add-options-to-Payment-Forms

You will find it in the first step on it, you can allow your users to input the quantity they want to purchase and calculate the total amount to pay.

Let us know if is this what you are looking for.

Thanks.

**beautifulcanvas**no wrong, delete this thread, look at my form before posting please.

- JotForm Support
**jonathan**We apologize for the confusion.

If I understand correctly now, our colleague

**Kevin_G**had properly asnwered the question on the original thread here http://www.jotform.com/answers/725643This was the latest response

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I moved your post to another thread, since you are asking about to add a quantity field to your products and this post was originally opened to ask about coupon codes in the payment processor.

However, I have checked your form, and I can see you are not using the payment widget to show the products, this is what I understand from your request :

That is not possible to do, since you are using a question with checkbox options, but I think is possible to do it using the Matrix field, then you can display all your products and then ask for the quantity to purchase, please see my sample form below :

https://form.jotform.com/53437334736964

Feel free to clone it.

You can find the Matrix field under the Survey Tools in the Form Builder :

This guide will help you to perform calculation in your form : http://support.jotform.com/help/343-How-to-perform-form-calculation-in-the-Matrix-field

Hope this is what you are looking for.

Thanks.

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Let us know if the latest solution offered by Kevin works for you or not.