Selling tf 2 items with api key and through "bot delivery"

Hello flippers. I know that this has been discussed already but I noticed that no one really answers to this question but I might be lucky and get some help. In the past I succesfully managed to use Gameflip Api in order to post rocket league items, but now I want to use api key for selling tf2 items and my biggest problem is that I don’t know what to change in the code line so that the delivery method it’s ,Bot trade, and not coordinated transfer. If someone can help me I would be really greatful.
Edit1: I spent like 5 hours and I ve managed to edit bulk listing and put everything in order but I get some errors when I try to node it. Anyone help pls

Well, bot trade is kinda hard so you will need a help from the support they will help you easily Just submit a ticket for gameflip, they will tell you step by step.

https://gameflip.zendesk.com/hc/en-us/requests/new

i think your problem has been solved.