Integer (read only)
Specifies the client version number of the avatar.
This attribute is new in version 3.1 and requires at least build 18 of the SDK and build 28 of the world server.
This attribute specifies the browser build number if the avatar is a user, or the SDK build number if the avatar is a bot. Build numbers are only known for browser builds 360 or later and SDK builds 18 or later; build numbers earlier than this will be reported as zero in this attribute.