Customizable target areas in Trackers


I would like to be able to set a customizable target area. Such as with my blood sugar or blood pressure, I need to be within # and # if I am not in that area I am alerted. It would be nice to also look at the graph and see where I am in and out of those ranges such as a line through the graph, showing too high or too low ranges. I think any of the trackers would find a customizable target range helpful.