Proper way to map First and Last Name from CRM Webhook to "Name" field in Zoho Creator Form

Proper way to map First and Last Name from CRM Webhook to "Name" field in Zoho Creator Form

I am trying to create a webhook action by mapping particular data in a CRM deal over to details in a form in my Zoho Creator App (Fulfillment Tracker). I am able to successfully map data to my form/table that is a standard field (i.e. single line input text). However, I am running into an issue when linking up to the name field (which has sub-fields of first name and last name). 

I included screenshots below up my setup on the Zoho CRM, the form on my Fulfillment Tracker App, and then the table which did not update the "Client_Name" field when the webhook was triggered.

Obviously the standard (input text) fields are working correctly, but I need to know how to map other types of fields (not only the name one). Does anybody have some insight on this?