ZH Creator to ZH Invoice integration

ZH Creator to ZH Invoice integration

New to ZOHO creator ...

I'm using zoho.invoice.createinvoice () in ZOHO creator.
All works fine in test and I can create an invoice in my own ZOHO Invoice account, however I need my application to create invoices in other ZOHO Invoice accounts.

I can also do this using the appropriate ZOHO Invoice API, using AuthToken and API key, but don't necessarily want to do this.

Is there any similar way that I can use zoho.invoice.createinvoice () to create an invoice in any (authorised, obviously!) ZH Invoice account.

Grateful for any sample code.

Thanks