How do I set a "nickname" using the Remote Operations API?

When creating a WP user, the “nickname” field is set to the username by default

https://codex.wordpress.org/Function_Reference/wp_update_user

How do I manually set my own value instead of the default username when using the s2member Pro Remote Operations API?

https://s2member.com/kb-article/pro-api-for-remote-operations/

I’ve searched everywhere for days now, and I can’t seem to find anything. I’m starting to think it isn’t possible.

I always wonder why people ever use the nickname field. Why can’t you use display name instead?

Can’t you just do a
update_user_meta($user_id, 'nickname', $var_with_nickname);
after you created the user with the Pro Remote Operations API.

thanks @KTS915 & @Woohoo… i will try both options… my client was concerned more with the nickname having to be unique from the username, but from what I’m seeing, this is not the case =)