Populating t_order.eaddress_no via SOAP API

Hi all,

We're in the midst of a new website project, and are trying to add a feature that allows a patron to pick an alternate email address for the order to use for ticket delivery (i.e. t_order.eaddress_no). So far, I haven't found a method or WP_ procedure that does this.

Am I correct that this capability has not been exposed through the APIs? Or, am I just missing something?

Thanks!
David