@Controller(path="/adm/AjaxCombo")
 public class ComboAjaxController extends MultiActionController {
 	AreaService 		areaService;	
 	ProjetoService 		projetoService;
 	....
 
 	public void setAreaService(AreaService areaService) {
 		this.areaService = areaService;
 	}
 	public void setProjetoService(ProjetoService projetoService) {
 		this.projetoService = projetoService;
 	}
                  ...
 
 
 	public void getProjeto(WebRequestContext request)throws IOException{
 		Projeto projeto = (Projeto) ServletRequestDataBinderNeo.translateObjectValue(null, request.getParameter("projeto"), null);
 		request.getServletResponse().getWriter().print(projetoService.load(projeto).getDescricao());
 	}
 	public void getArea(WebRequestContext request)throws IOException{
 		Area area = (Area) ServletRequestDataBinderNeo.translateObjectValue(null, request.getParameter("area"), null);
 		request.getServletResponse().getWriter().print(areaService.load(area).getNome());
 	}
                   .....
 }
 
 

 			var objName = '';
 			function getBean(obj){
 				objName  = obj.name;
 			    beanName = obj.name.substring(obj.name.lastIndexOf('.')+1,obj.name.length);
 			    metodo   = 'get' + beanName.substring(0,1).toUpperCase() + beanName.substring(1,beanName.length);
 				
 				if (obj.value != "<null>"){
 					sendRequest('${pageContext.request.contextPath}/adm/AjaxCombo?'+beanName+'='+obj.value,'ACAO='+metodo,'POST', setDescricaoBean, erroChamarAjax);
 				}else{
 			 		document.getElementById("msg."+objName).style.display = "none";
 		 			document.getElementById("msg."+objName).innerHTML = "";
 				}
 			}
 			function setDescricaoBean(data){
 				if (data == 'null')data = 'Descrição não preenchida';
 		 		document.getElementById("msg."+objName).style.display = "";
 		 		document.getElementById("msg."+objName).innerHTML = data;
 			}
 			function erroChamarAjax(request){
 		 		document.getElementById("msg."+objName).style.display = "";
 		 		document.getElementById("msg."+objName).innerHTML = request.responseText;
 			}		 
 

 			<n:comboReloadGroup useAjax="true">
 				<t:property name="area.projeto" label="Projeto" ONCHANGE="getBean(this)" />
 				<t:property name="area" 		label="Area" ONCHANGE="getBean(this)" />
 			</n:comboReloadGroup>
 

 (Projeto) ServletRequestDataBinderNeo.translateObjectValue(null, request.getParameter("projeto"), null);
 

 class Model {
      Object modelo;
      ..getter e settter..
 }
 

 public void getProjeto(WebRequestContext req, Model model) {
     Projeto projeto = (Projeto) model.getModelo();
 }
 

sendRequest('${pageContext.request.contextPath}/adm/AjaxCombo?'+beanName+'='+o

sendRequest('${pageContext.request.contextPath}/adm/AjaxCombo?modelo='+o

 <t:property name="area" label="Area" onchange="loadSecondDescription(this)" />
 

 <script type="text/javascript">
 	function loadSecondDescription(property){
 		var value = property.value;
 		var div = 'msg.'+property.name;
 		sendRequest('${pageContext.request.contextPath}/modulo/secondDescription', 
 		'bean='+value+'&descriptionarea='+div,
 		'POST',
 		callbackSecondDescription);
 	}
 	
 	function callbackSecondDescription(data){
 		eval(data);
 	}
 </script>
 

 package annotations;
 
 import java.lang.annotation.ElementType;
 import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
 import java.lang.annotation.Target;
 
 @Target(ElementType.METHOD)
 @Retention(RetentionPolicy.RUNTIME)
 public @interface SecondDescription {
 
 }
 

 @SecondDescription
 public String getDescricao(){...}
 

 package controller;
 
 import java.lang.reflect.Method;
 
 import annotations.SecondDescription;
 import br.com.linkcom.neo.controller.Controller;
 import br.com.linkcom.neo.controller.DefaultAction;
 import br.com.linkcom.neo.controller.MultiActionController;
 import br.com.linkcom.neo.core.standard.ApplicationContext;
 import br.com.linkcom.neo.core.standard.Neo;
 import br.com.linkcom.neo.core.web.WebRequestContext;
 import br.com.linkcom.neo.persistence.GenericDAO;
 import br.com.linkcom.neo.util.Util;
 import br.com.linkcom.neo.view.ajax.View;
 
 @Controller(path="/modulo/secondDescription")
 public class SecondDescriptionController extends MultiActionController {
 
 	@DefaultAction
 	public void getSecondDescription(WebRequestContext request, BeanHolder beanHolder){
 		Object bean = beanHolder.getBean();
 		if(bean != null){
 			String secondDescriptionProperty = getSecondDescriptionPropertyName(bean.getClass());
 			if(secondDescriptionProperty != null){
 				GenericDAO<Object> dao = getDaoForBean(bean);
 				bean = dao.load(bean);
 				
 				ApplicationContext applicationContext = request.getApplicationContext();
 				Object secondDescriptionValue = applicationContext
 						.getBeanDescriptor(bean)
 							.getPropertyDescriptor(secondDescriptionProperty)
 								.getValue();
 				
 				String div = request.getParameter("descriptionarea");
 				String value = Util.strings.toStringDescription(secondDescriptionValue);
 				View.getCurrent()
 						.eval("document.getElementById('"+div+"').innerHTML " +
 								" = '"+value+"';");
 			}			
 		}
 	}
 
 	@SuppressWarnings("unchecked")
 	private GenericDAO<Object> getDaoForBean(Object bean) {
 		try {
 			return (GenericDAO<Object>) Neo.getObject(Class.forName("dao."+bean.getClass().getSimpleName() + "DAO"));
 		} catch (Exception e) {
 			throw new RuntimeException("Não foi possível encontrar um DAO para "+bean, e);
 		}
 	}
 
 	/**
 	 * Esse método retorna qual é o nome da propriedade que possui a anotacao @SecondDescription
 	 * ou null se nenhuma tiver...
 	 * @param classe
 	 * @return
 	 */
 	private String getSecondDescriptionPropertyName(Class classe) {
 		Method[] declaredMethods = classe.getDeclaredMethods();
 		for (Method method : declaredMethods) {
 			if(method.isAnnotationPresent(SecondDescription.class)){
 				return Util.strings.uncaptalize(method.getName().substring(3));
 			}
 		}
 		return null;
 	}
 }