Dynamic title from calculation group column

[DM_W]

Hello, I have created a calculation group so that my bar chart shows the data in value or in percentage. There is a slicer on the page and the user can chose between "# Value" and " % Percentage".

The user wants a dynamic title showing which format is selected. But I get this error. Any idea how to solve it?

Thank you

[dk_dk]

I do not have a specific solution unfortunately, but I would try to see if I can make something work with 

SELECTEDMEASUREFORMATSTRING(). I would assume that the output of that DAX would change depending on what format the calculation group applies to your measure, but I am not sure.