Filtering contact by timeline event type and property disappeared


I’m a developer for Attendease. I’ve done a Hubspot timeline API integration, and created events a given contacts (schedule sessions, check-in session, see When I first worked on this (last November - 2016), I was able to filter Contacts based on their Timeline events: there was a specific section in the “Filter contacts by…” to select given events, and associated property (ie: only contact who have schedule “Session #1”).
Would you happen to know if this feature still exists? If so, how could I use it?
Thanks in advance for your help,
Best regards,

Find below two screenshot to illustrate my issue.


I found the answer here:
I had to create a new trial event with the right plan/subscription. Here’s a screenshot of what I was referencing.
Hope that helps,