[ovirt-users] OVirt API question

Hello, OVirt community! I have some problems in understanding with OVirt (v 3.6.0) API. I'm trying to create user with specifying his roles, by using such signature in POST call: <user>

<user_name>testuser@saml-auth</user_name>

<roles>

<role id="some_role_id1"/>

<role id="some_role_id2"/>

<role id="some_role_id3"/>

</roles>

</user>

The user is created but without the roles. The next issues, that I encountered is associated with updating of existing user (adding the roles to him). I am trying to do PUT call on .../ovirt-engine/api/users/long_user_id/roles : <role id="some_role_id1"/> But this doesn't work. Please, give we insight in what I am doing wrong. ------------- Sincerely, Konstantin Klymuk.