How can I create an Orion alert when my DPA Database Instance > Sessions > Trace Count is greater than 50?

We have solarwinds orion and Database Performance Analyzer and we'd like to create alerts on data that is specific to DPA.

When I go to create an alert, I see the option to use a "Database Instance" to alert on, but diving into the options I can't seem to find the ability to alert on a trace count:

(I just see the Session is currently "normal", without being able to dive deeper).

I know the data is stored somewhere, though, because it is listed in performance analyzer:

Is there a way to be able to create an alert that fires when DPA sees that the sql trace count is greater than 50?