API - Character Sheet - Selectable Field

Can the API be used to set selectable field on Character Sheets? For example on the Pathfinder Sheet the gender is currently a selectable field of "None", "Male", or "Female". It's easy enough to set an attribute value, but this doesn't seem to set the selectable value on the sheet properly. Is it possible to do this via the API? If it is possible, can someone provide a code example to use?

I believe the select dropdown updates correctly when you close and reopen the sheet after setting the attribute value from the API. There's no way to do this directly.