WixData querying services, how to get the session duration returned?

I am using wixdata to query bookings/services and have a custom page showing all the services available to book.

However, the data returned does not contain the session duration! How can i include this in the returned data?

I'm currently running:

wixData.query("Bookings/Services") // here i have tried to .include all kinds: session, sessionDuration, etc to no avail! .find() .then( (results) => { console.log('results: ', results); $w("#serviceRepeater").data = results.items; } );