Dynamic Title Based on Slicer Options

I have a 100% stacked column chart and a slicer with the names of countys in New York. I would like to create a title that changes according to what options within the slicer is chosen. It should essentially switch between two titles...

1.) If someone selects Richmond, New York, Queens and the Bronx, I would like the title to state "Core Market"

2.) If the slicer is cleared, I would like it to read as "Total Market".

Thank you for any guidance and tips in advance!