How to get two different dimension members in columns changing alternatively based on two parameters

Hi Team,

I am building a cube view with account in rows. In columns i need entity and UD2 dimension members but the columns  names should change as entity members and UD2 members based on choosing the parameters. I have tried  Primary dimension type as entity  and nested member expansion primary dimension type as UD2 but i am unable to achieve my requirement, can anyone please suggest .

Let me know if any questions.

Thanks in Advance.