TEC And Zapier

I am trying to integrate TEC and Zapier and Meetup. When an event is created, I want it to appear on Meetup.

I create an Event in the TEC Admin console.

I log into Zapier, and create the Zap. Yet for some reason, Zapier cannot see the value stored in _EventStartDate (doesn’t even see the field). I can see other fields, including Post date (not the same as Event date).

I can use post date to create the event in meetup. Of course, the date is wrong, because i’m using the wrong field. Any idea why the _EventStartDate would not appear in Zapier?