I understand that you want to view simulation of your custom scenario in Unreal Engine. In MATLAB, we use Simulation 3D Scene Configuration block to view Unreal Engine simulation.
MATLAB already have a few prebuilt scenarios that you can simulate in Unreal Engine. You can refer to this documentation for further understanding.
To simulate your custom scene in Unreal Engine you have to create the scene in Unreal Editor. You can refer this documentation for it
