Firebase Docs Reference Interface: UserPropertyValue functions.analytics.UserPropertyValue interface static Predefined or custom properties stored on the client side. Properties setTime string UTC client time when the user property was last set. value string The last set value of a user property. Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 3.0 License, and code samples are licensed under the Apache 2.0 License. For details, see our Site Policies. Java is a registered trademark of Oracle and/or its affiliates. Last updated April 5, 2018.