Create unx using program code

Hi,

We are using BOBJ 3.1 and using Designer SDK reference in .net application to create universe (.unv) by .net code. Now, we have to move with BOBJ 4.1 and need to create .unx using .net application. Can anyone guide me how to do. I am trying to find IDT api reference but not getting anything. Please suggest.

Thanks,

Pankaj