Use of custom field in RSVP registration form

Question:
We host many RSVP events and use the built-in event registration page. The event is open to everyone. On that page, I have added two custom fields (such as company name). When I manually export the guest list, I can see the responses. However, I would like to email these responses using Wix automations or save them in the contact database (e.g., in the company field). With automations, I can only e-mail the name, firstname, title of the event, time of the event etc, but I can’t find a way to mail the responses to the custom field(s).

Product:
Wix Studio Editor.

What are you trying to achieve:
use automatisation to also e-mail the responses to the custom fields when a guest registers for an event.