'mediaProxy.mediaPlayFrom' not working!

Community Forums API and App Developers Support
1

I have written some code to draw kaltura player.

<div id="myEmbedTarget" style="width:400px;height:330px;"></div>
<script src="http://api.stage.medianac.com/p/138/sp/13800/embedIframeJs/uiconf_id/11601064/partner_id/138"></script>
<div id="kaltura_player_1427190129" style="width: 640px; height: 390px;" itemprop="video" itemscope itemtype="http://schema.org/VideoObject">
<span itemprop="name" content="StreetEco_PA_kurz_R68"></span>
<span itemprop="description" content=""></span>
<span itemprop="duration" content="47"></span>
<span itemprop="thumbnail" content="http://api.stage.medianac.com/p/138/sp/13800/thumbnail/entry_id/0_mxihoxzq/version/100000/acv/162"></span>
<span itemprop="width" content="640"></span>
<span itemprop="height" content="390"></span>
</div>
<script>
kWidget.embed({
  "targetId": "myEmbedTarget",
  "wid": "_138",
  "uiconf_id": 11601064,
  "flashvars": {},
  "cache_st": 1427190129,
  "entry_id": "0_mxihoxzq",
  "flashvars": {
	'autoPlay': true,
	'mediaProxy.mediaPlayTo': 20,
	'mediaProxy.mediaPlayFrom': 9,
	'mediaProxy.preferedFlavorBR': 500
	},

});
</script>"

The issue is, ‘mediaProxy.mediaPlayFrom’ tag is not working. its starting from 0 only.

Can anybody help?

Thanks
Saurabh