Linking CRM contacts and accounts to Desk via API

Linking CRM contacts and accounts to Desk via API

Hello,
My system has a set of accounts and contacts that I would like to sync with Zoho Desk and Zoho CRM using the APIs provided. I have already written code that syncs my accounts and contacts with Zoho CRM and now I am trying to do the same with Zoho Desk. The problem is when I link them with the GUI provided the Desk records have zohoCRMAccount and zohoCRMContact parameters that I can't seem to be able to set via the Desk API. Is there some way I am missing to set these parameters via the Desk API that I am missing?

James