Jquery Tokenize plugin with activeadmin

I'm trying the jquery Tokenize plugin for multi select options,I added the files to assets/javascripts and assets/stylesheet folders, Called those filesin application.js

      //= require jquery
      //= require jquery_ujs
      //= require jquery.tokenize
      //= require_tree .

I'm using activeadmin and I invoke the file in active_admin.js also but it's not working, I need help on this.