Closed Caption Adobe Media Server 5 Implementation

What is the way to go in order to implemt closed captions to AMS 5?

I read the developer guide but its not much help..

I was expecting something like this to work.... But is not working > The player has the "CC" icon in place but not closed captions are showing up. I am currently using ttlm format

<object width="640" height="360" type="application/x-shockwave-flash" data="/videos/mediaplayer.swf">

<param name="movie" value="/videos/mediaplayer.swf" />

<param name="flashvars" value="file=/videos/lizzie_master.flv&width=640&height=360&autostart=false&showicons=true&captions=/videos/lizzie_captions.xml&useaudio=false&usecaptions=false" />

<param name="allowfullscreen" value="true" />

<strike><param name="file" value="/videos/lizzie_master.flv" />

<param name="shuffle" value="false" />

<param name="useaudio" value="false" />

<param name="usecaptions" value="false" />

<param name="captions" value="/videos/lizzie_captions.xml" /></strike>

</object>

Thanks,!