Dinamically change table dimension

Hello everyone,

what I'd like to achieve is something like this: How to change measure value using parameters.

But, what I'd like to achieve is something different.

Let's say I have a table with the following columns:
Customer (dimension); This year sales (Measure); This year quantity (measure).

What I'd like to achieve is to change dinamically not the a measure, but the dimension (Customer), for example, with "Region".

Is it possible? Or do I have to use the old bookmark trick? I don't really like it since it cause some minor problems....