javascript flashvar question with JW Player

I don't know if I'll be able to get this answer here, but I'm trying to get the JW Player to toggle between high and low quality settings. Here is my code:

<script type="text/javascript">
var so = new SWFObject('/lessons/videos/player.swf','mpl','610','480','9');
so.addParam('allowfullscreen','true');
so.addParam('allowscriptaccess','always');
so.addVariable('plugins', 'http://www.mbira.me/lessons/videos/plugins/hd/hd.swf');
so.addVariable('hd.state',false);
so.addVariable('hd.autoswitch',false);
so.addVariable('hd.bandwidth',3200);
so.开发者_开发问答addVariable('hd.file', '/lessons/videos/Buka_Tiende_from_calculator.flv');
so.addVariable('file','/lessons/L2/Nhemamusasa_Acoustic.flv');
so.write('mediaspace');
</script>

I read here that there is a setting that there is a default built into the HD plugin to switch determined on the users bandwidth. I downloaded a patch here: http://interfacelab.com/patch-for-hd-plugin-for-jw-player/

So I could disable that behavior to test, but still no luck. You can see in my code, that for now, I just have two different videos to toggle in order to test if things are working. I should say that both those videos are actually "high quality" for now, but that shouldn't make a difference I guess. Any ideas, and if not, any other places I could look to implement this functionality? Thanks! Joel

so.addVariable('plugins', 'plugins=hd-1');

needs to be changed to:

so.addVariable('plugins', 'hd-1');

The example page was incorrect...