how to use captions(sub titles) in the below example code in wowza player ?

how to use captions(sub titles) in the below example code in wowza player ? that to i want to use srt type file. can plz tell me what to do active this. and where i have to upload srt files ?

<div id="playerElement" style="width:100%; height:0; padding:0 0 56.25% 0"></div>
	<script type="text/javascript">
	WowzaPlayer.create('playerElement',
	{
		"license":"xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx",
		"title":"gluteus-medius-tear",
		"description":"gluteus-medius-tear",
		"sourceURL":"https://vod.xxx.x/vod/smil:xxxxxx.smil/playlist.m3u8",
		"autoPlay":true,
		"volume":"75",
		"mute":false,
		"loop":false,
		"audioOnly":false,
		"uiShowQuickRewind":true,
		"uiQuickRewindSeconds":"30"
	}
	);
	</script>