EPBCS_How can you set the option to show alias in run time pormpt on a business rule?

I know I must be missing something but how can you set the option to show aliases when users are selecting members from a run time prompt on a business rule in Planning? I'm working in Could version of Hyperion (EPBCS). Thanks.

When run a business rule, the run time pompt up display, User can select a member in the member selector with Alias display. After user selection, in the run time prompt window, member name display. We expected to see member Alias to show.