Problems Pushing Data from CRM to Creator

Problems Pushing Data from CRM to Creator

1) My Zoho Creator app creates records in CRM and vice-a-versa.
  • Creator uses zoho.crm.create() to add a record to CRM
  • CRM uses a rule triggered by an edit with a web hook using a REST API call to add a record to Creator.
2) I'm trying to keep certain fields synchronized between CRM & Creator. 

3) Updating records in CRM triggered by edits in Creator is no problem with zoho.crm.updateRecord()

4) Updating records in Creator triggered by edits in CRM is not working.

I'm trying to do the data push from CRM to Creator with a web hook using a REST API call to update Creator.  Is there a better/different way?

Can somebody show me an example of a CRM working web hook that pushes data from CRM to Creator using a REST API call to update a record in Creator.

Any example would be appreciated, including specifics regarding usage of the "criteria" parameter in to find a particular record in Creator using the Creator ID field for the record, i.e. criteria=(ID=1234567890).

I've attached my "non-working" web hook .

Thanks.