Hi,

What would be the query syntax for filtering invoices by multiple contact IDs? I have tried following to no avail:

/invoices?contact_id=xxxxxx,xxxxx -> Error: Invalid value

/invoices?contact_id=xxxxxx&contact_id=xxxxxx -> Error: should not appear more than 1

/invoices?contact_id[]=xxxxxx&contact_id[]=xxxxxx -> Error: should not appear more than 1

Thanks for any help