Zoho Flow Create Books Customer associated to Zoho CRM contact

Zoho Flow Create Books Customer associated to Zoho CRM contact

I have a flow that creates a Zoho CRM contact and then I would like to add a Zoho Books Customer with the same information to create an invoice. Because m y CRM and my Books are in sync, how can I add the Books Customer and join that customer to the Zoho CRM contact?

Thanks,