@tenoch. Thanks for using my plugin. The filter not working usually means that there is a jQuery conflict. Do you have another Joomla extension or maybe even your Joomla template that loads another version of jQuery? I have included an option in the Plugins Manager that allows you to specify to not load jQuery. Try selecting that option. By not loading jQuery with my plugin, there would not be any conflict with the jQuery already loaded in your site.
Let me know how it works out. If it doesn’t work out, I can have a look at the page and make a suggestion on how to solve it.