Exception based on hidden key figure

Hi,

I want to define an exception based on a key figure that shows a percentage.

The exception should effect not only the percentage key figure but also two other keyfigures. (<50% -> all key figures red >=50% all key figures green).

I've set the exception to affect "all structure elements" and it works fine as long as the percentage key figure is shown in the query. As soon as I hide the percentage key figure the exception does not work anymore.

Is there a way to create an exception that affects all key figures and is based on a hidden key figure / formula?