destroy method problem

[gorelics]

destroy: function() {
      ...
     // this is AutoHidingNavbar object
     // $.data(this, 'plugin_' + pluginName, null);
     // fix 
     $.data(this.element.get(0), 'plugin_' + pluginName, null);
      ...
    } 

$.fn[pluginName] = function(options) {
...
// this is DOMElement
$.data(this, 'plugin_' + pluginName, new AutoHidingNavbar(this, options)); 
...
}