Simple answer - you can't.
Complicated answer - you can copy and invert a mesh to create a 'reflection' of a specific entity. Depending on your requirements you might have to mess about with EntityOrder or EntityAlpha to get the effect right.
Complicated answer - you can copy and invert a mesh to create a 'reflection' of a specific entity. Depending on your requirements you might have to mess about with EntityOrder or EntityAlpha to get the effect right.