What do you expect from Ans?

[pinkman]

Yes I clearly understand that inside a CAS function Ans is the one of the CAS, and that the reason of this is the difficulty of integration between two universes.
But one can expect the CAS command, executed in the Home context, receives all the data of this context, Ans included.
In fact the syntax is important: it is not executed in the Home context, it is executed from the Home context.