Finding out the AI object type when a new one is added.

In my c# application, I am registered to receive notifications when new AI objects are added. In the recEvent structure that is passed in, eObjType contains the type of AI object. However, in c# this field is protected so I can't access it:'Microsoft.FlightSimulator.SimConnect.SIMCONNECT_RECV_EVENT_OBJECT_ADDREMOVE.eObjType' is inaccessible due to its protection level.Is there any other way to figure out the object type? If I try to request aircraft data on say a ground vehicle, FSX does a nice CTD.