Dropdownlist + Ctreeview + Ajax

Boa noite!

Tenho o seguinte cenário: Renderizar o CtreeView com base no value do dropDownList;

tentei da seguinte forma sem sucesso:

registrei a função do jquery.treeview.async logo abaixo da criação dos componentes, a ideia seria de sobrescrever a função para concatenar no parametro data do $.ajax o valor do get:

root: root+’;’+$(’#listname’).val()


echo CHtml::dropDownList('listname', 'A',array('A' => 'Ativos', 'F' => 'Finalizados'));


        $this->widget('CTreeView',

	array(

		'url'=>array('treeFill'),

		'animated'=>'normal',               

		'htmlOptions'=>array('class'=>'treeview-famfamfam'))); 

        

        

        

    Yii::app()->getClientScript()->registerCoreScript('jquery');

    Yii::app()->clientScript->registerScript("",";(function($) {	

        alert('11111');

        function load(settings, root, child, container) {

	function createNode(parent) {

		var current = $('<li/>').attr('id', this.id || '').html('<span>' + this.text + '</span>').appendTo(parent);

		if (this.classes) {

			current.children('span').addClass(this.classes);

		}

		if (this.expanded) {

			current.addClass('open');

		}

		if (this.hasChildren || this.children && this.children.length) {

			var branch = $('<ul/>').appendTo(current);

			if (this.hasChildren) {

				current.addClass('hasChildren');

				createNode.call({

					classes: 'placeholder',

					text: '&nbsp;',

					children:[]

				}, branch);

			}

			if (this.children && this.children.length) {

				$.each(this.children, createNode, [branch])

			}

		}

	}

	$.ajax($.extend(true, {

		url: settings.url,

		dataType: 'json',

		data: {

			root: root+';'+$('#listname').val()

		},

		success: function(response) {

			child.empty();

			$.each(response, createNode, [child]);

	        $(container).treeview({add: child});

	    }

	}, settings.ajax));

}var proxied = $.fn.treeview;

$.fn.treeview = function(settings) {

	if (!settings.url) {

		return proxied.apply(this, arguments);

	}

	var container = this;

	if (!container.children().size())

		load(settings, 'source', this, container);

	var userToggle = settings.toggle;

	return proxied.call(this, $.extend({}, settings, {

		collapsed: true,

		toggle: function() {

			var $"."this = $(this);

			if ($"."this.hasClass('hasChildren')) {

				var childList = $"."this.removeClass('hasChildren').find('ul');

				load(settings, this.id, childList, container);

			}

			if (userToggle) {

				userToggle.apply(this, arguments);

			}

		}

	}));

};


})(jQuery);",CClientScript::POS_LOAD);




Nota: em CClientScript tentei todas as constantes.