I understand the current limitations with the Bookings and CRM integration and that custom functions need to be used to map custom registration form fields to Zoho CRM. HOWEVER, I am attempting to create a custom function that locates the Zoho CRM meeting record by Booking ID, then mapping the custom fields. For example, custom fields in Bookings are street address, city, state, zip which I need to map to the CRM Meeting Location field. 

Using Custom Functions is it possible to: 

1. Locate a meeting record in Zoho CRM

2. Update the meeting record using the individual custom fields from Bookings