Is there a way to automatically annotate the last data point in a series? I have a dashboard with many line graphs, and a datasource that will be refreshed monthly. I'd like to always annotate the last datapoint in the series with the current value in the series (i.e. sales in NJ are 100,000 in January 2012, next month maybe it is 120,000). I have many graphs, and it seems tedious to do this one at a time.