Dynatree Filtering is Not Working

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ASP.NET

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Hey,
I am using dynatree. It's working fine but i am facing with a problem like filtering object/node in a tree.
'jquery.dynatree.filter.js' file has been included in project and configure all those thing accordingly.

But in this file " $.ui.dynatree._DynatreeClass.prototype.applyFilter "

I am unable to apply Filter option from my search page. It's not working in my project.

Is there any version related problem or any other issue related to dynatree.

Dynatree Version : @version: 1.2.5
Dynatree Filter Version : @version Latest

FYI : I need a filter option just like below link :

http://donik-fancytree.googlecode.com/hg-history/c21e946e67c7fc38b4e3820977f732463052f368/demo/sample-ext-filter.html

It's urgent. I am eagerly waiting for a valuable response.

Thanks in Advance.

Shawon.
System Developer