Can I set restriction on coupon quantity which I want to sell via Vertuemart?

I want to sell, let me say, 100 uploaded codes via Virtuemart. But I found next information:
"Note, once all the codes in your gift certificate product have been marked as used, AwoCoupon will switch to auto-generating random codes."
It is very important for my service to sell only uploaded coupons and no any generated. Is it possilbe to make it somehow? Maybe in Virtuemart - item's quantity?

Hello,

Yes, this is just a product stock issue. You can set the number in stock of the specific product to 100, and make sure you have virtuemart setup to enforce the restriction.