Accessing the Maximum Field of a Tick Mark Field

Hello new person here so sorry in advance if this is a dumb question, but I am trying to access the max of a tick mark with max property that I have in a property sheet and I am wondering how to access it. The field is called “Health” so I know I can access the current value using $Health$ but I can’t seem to find a way to get its maximum, is it possible to access?