Hi,
I have a custom map which is going to be used as a seating map and I need(!) this functionality as well. I have read this thread which seems to be aiming at the same: http://forum.fusioncharts.com/topic/6211-change-entity-background-color-by-clicking-on-entity/
This kind of works, it selects the seat, men after a couple of seconds the sheet seems to reload the data and clears the marking.
Has anyone tried something similar?