Editing Email template with Custom fields

I have custom form along with default form of webba. Using CF7 i have added 3 custom fields and file attachment. However, Booking details need to the admin’s email. but only our default details goes along with the file attachment. custom fields doesn’t go. I saw some where i have to add #fields_ to custom field ID, but where do I add this?

I created email template to add this, but i tried calling the email template in the service 4 places. still the admin gets only the default message goes to email. no custom fields.