How can I filter an item that is within an item? Filter MeetingTimeSuggestions by attendee availability

[Robert94]

Please see the pic first.
So to filter the array by "organizerAvailiability" the expression is @equals(item()?['organizerAvailability'], 'free')
But how do I write to filter the array If "availability" of the "attendeeAvailability" item equals free?

[takolota]

It should either be…

@equals(item()?['attendeeAvailability']?[‘availability’], 'free')

Or

@equals(item()?['attendeeAvailability']?[0]?[‘availability’], 'free')

[Robert94]

But with what function can I use that, filter array is not working, it`s saying the expression is too complex 

[takolota]

It’s too complex to switch back to the basic mode view, but you should still be able to run the flow & action without changing back to basic view.