The webhook will be triggert from VAPi, then triggers the Google Sheets model which transfer data such as "phonenumber" or "clientname"to vapi via the http modul. But to adress vapi via this it needs a URl right?

if I'm understanding correctly, you won't need a URL to send it back, you just want to format your response in the way that the original webhook wants it

this happends https://cdn.discordapp.com/attachments/1382007568494493746/1382008041058205916/Bildschirmfoto_2025-06-10_um_16.46.16.png?ex=684996c9&is=68484549&hm=fc3729758bd638b140cae664420dda878b91e78f09673ae0d516f03e24b6bb23&

I'm not sure where you are trying to send that data to via Post

Can you help me?

which webhook event are you receiving?

What do you mean?

https://docs.vapi.ai/server-url/events I'd read through here to get a deeper understanding of the server event stuff