title: Query selected dimension members (tostring)
body: <p>I wonder if this is possible.  I want to create a calculated member that will show which dimension member is selected by a user.  This member could then be used as a string to build responsive report titles (in PowerBI likely).</p>
  
  <p>I've played with NAME, UNIQUENAME along with CURRENTMEMBER and such, but didn't get far, honestly I barely know where to start or if it's even possible.</p>
  
  <p>For example.   Say I have a country  and city dimension to filter a host of measures and the user filters by "United States" and chooses a city (or three).   I'd like to be able to retrieve "United States"  as well as which cities were selected as a string and add it to a report title possibly to get a title like "Population stats for " city, city, city, " in ", country.</p>