Plane code for 190A4 1.42ATA

[Lagarto]

I presume you want to fly it, not as AI. If so, forget. At the present state of things, there's no way to add flyable planes to DGen - you can have them only as AI. It was the same story with Hs 129 and all other new flyable planes.
The good news is that a new DGen, currently being worked on by 3rd party, reached alpha stage.