I have a candlestick graph with a moving average drawn using a trend set. On the moving average line I would like to add an annotation (a red circle with a tooltip), but I am having trouble calculating the necessary y coordinate to use for the annotation. Macros looked promising (e.g. http://docs.fusioncharts.com/tutorial-advanced-charting-annotations-dynamically-positioning-annotations-using-macros.html) however they do not seem to support trend sets. How does one achieve this effect using FusionCharts?