Cargo Airplanes to Cargo Parking? I think I got it.

I have reasons to believe that I found a way (elaborate) to make cargo aircraft go to cargo parking spaces.And it's NOT the Traffic SDK.I set the radius parameter in the MDL file (see MDL Format SDK) to 01 for my cargo plane, created a very small Cargo parking (10ft) and put that one on top of the list and ...The cargo plane showed up at the cargo parking. When I removed theflightplan with the cargo plane, the unmodified 'passenger' jets refused to use this cargo parking.Further testing needed, but it looks good.