Flash - Spark List SelectedIndex Doesn't Update?

Sep 8, 2011

when i use nextSlide() and prevSlide(), which are executed when i click on two buttons. SelectedIndex works when i click on the elements in the List. What am i doing wrong? do i have to dispatch some events? Are there any tricks to doing it with buttons?This is my playlist class

public class Playlist extends List
{
private var dispatcher:Dispatcher;

[code]......

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