[flexcoders] How to manipulate legend in a chart

[Patricia Han]

Hi All,

I tried all kinds of staff to dynamically turn on/off a series of line charts 
(I did not create the legend separately). The series can be turned on/off, but 
not the legend. How should I manipulate the legend when I only know the 
LineSeries? The class LineSeries only has an array of LegendData which is 
read-only and cannot setVisible (or visible).
Can someone help?

Thanks,

Pat