CakePHP Filename Cache Busting

.htaccess

<IfModule mod_rewrite.c>
    RewriteEngine On

    RewriteCond %{REQUEST_FILENAME} !-d
    RewriteCond %{REQUEST_FILENAME} !-f
    RewriteRule ^(.+)\.(\d+)\.(js|css|png|jpg|gif)$ $1.$3 [L]

    RewriteCond %{REQUEST_FILENAME} !-d
    RewriteCond %{REQUEST_FILENAME} !-f
    RewriteRule ^(.*)$ index.php [QSA,L]
</IfModule>

AppHelper.php

<?php

class AppHelper extends Helper {

	/**
	 * Override so that the timestamp is added to the file instead of as a query parameter,
	 */
	public function assetTimestamp($path) {
		$parts = explode('?', parent::assetTimestamp($path));
		return substr_replace($parts[0], '.'.$parts[1], strrpos($parts[0],'.'), 0);
	}

}

Hi,

I have test your gist with the lastest CakePHP and it dosn't seems to work.
Can you help me please ?