Creator Report with Zoho Invoice values

Creator Report with Zoho Invoice values

Hi,

I would like to create a Report which include a value from Zoho Invoice.

May I know what approach should I use?

I read the manual of the custom function feature, but look like it is not I want.

I would like to get an Invoice total amount and list it with every records on my Report, assume I already input an Invoice ID for each record.

Thanks
Mike