Changing the name of a custom module name in custom functions

Changing the name of a custom module name in custom functions

Hello. I am not able to change the name of a custom module using a custom function. For example, I have a custom module called "eQuotes". I'd like to change "eQuote Name" using the UpdateRecord function but am not able to. I am able to change any other custom field, but no the name. Is this by design? 

here is the code:  updateQuoteName = zoho.crm.updaterecord("custommodule4",strQuoteId,{ "eQuote Name" : productDesc });

I have tried entering "custommodule4 Name", "{0 Name}", and "NAME" for the field key with no luck.