Juan,
This feature was released in 9.11 according to the release video here: https://www.youtube.com/watch?v=Lxnj5hXm7GE Looks like you’ll need to update. However, if I would recommend waiting for 9.11.1, which will be released shortly. It will have a fix for a bug in the expression editor that is worth waiting for.
Hope that helps,
Mike