hash is undefined when using hashDataAttribute: true

Hello.
I m using following options for the slider;
var options = {
navigationSkip: false,
**hashTags:true,
hashDataAttribute:true,
hashChangesOnFirstFrame:true**
};

i have used all the three options hashTags, hashDataAttribute and hashChangesOnFirstFrame as true. I have included the hashChange event plugin (http://benalman.com/projects/jquery-hashchange-plugin/ ) Also i have added a **data-sequence-hashtag** attribute as follows:

``` html

but the hash in url is always undefined.

Example URL :
http://prashantsani.com/demos/misc/sequence/