How to create a tooltip for a Card?

Thanks for that mike_honey. The Dynamic Tooltip is great and I am using it a lot to provide i icons for further information. Not quite what I want in this case though. What I want is the Dynamic Tooltip but instead of providing an image I want to display a number as per the card visual but then be able to have tooltips based on other measures showing. ie. to be able to show a value but be able to see a tooltip for the benchmark and variation from benchmark. Given that the Dynamic Tooltip is already there it should not be that hard for somone to come up wiht this varient of it.