Hi LeenVe,   It's not the most elegant way, but if you will not be changing the aggregation in the graph, you could rename the input you are using for the Y axis to include the words MAX in it.  For this example I simply created a duplicate value for what I wanted on the Y-Axis and added MAX at the end of the name.  If you remove the label for the Y axis, it will still be able to be seen when you click on the data point.   Hope this helps,   Mike ... View more