How to show full qualified member name in ad hoc mode or member selection window

Hello everyone,

I have one question about how to show the full qualified member name in ad hoc mode or the member selection window.

I have an alternate hierarchy for the Cost Center dimension:

However, when i drilled down it in Excel via ad hoc mode, it did not show the full qualified name:

I tried to follow this post:

However, it did not work.

Seeking your help .

Thanks and have a nice day!