I got 

> 
> j\_idt7:city: Validation Error: Value is not valid
> 
> 
> 

Cutting to the cheese, ManagedBean code: 

```
 //few imports here
 @ManagedBean
 @SessionScoped
 public class CountriesAndCities implements Serializable{
 private List<SelectItem> countries;
 private List<SelectItem> cities;
 private  Map<String,List> m;
 private String selectedCountry;

 public String getSelectedCountry() {
return selectedCountry;
 }

 public void setSelectedCountry(String selectedCountry) {
this.selectedCountry = selectedCountry;
 }

 public CountriesAndCities(){
countries = new ArrayList<SelectItem>();
cities = new ArrayList<SelectItem>();
m = new HashMap<String,List>();
m.put("France", Arrays.asList("paris","marseille"));
m.put("England", Arrays.asList("Munchester","liverpoor"));

 }

 public  List<SelectItem> getCountries(){   
cities.removeAll(cities);
countries.removeAll(countries); 
countries.add(new SelectItem("select country"));
for(Map.Entry<String, List> entry: m.entrySet()){
    countries.add(new SelectItem(entry.getKey()));
    }

return countries;
 }
 public List<SelectItem> getCities(){   
for(Map.Entry<String, List> entry: m.entrySet())
      {if(entry.getKey().toString().equals(selectedCountry)){
        cities.addAll(entry.getValue());
        break;
    }
}
return cities;
 }
 public void checkSelectedCountry(ValueChangeEvent event){
selectedCountry = event.getNewValue().toString();   
 }

```

Here's the snippet of my .xhtml :

```
 <h:selectOneMenu immediate="true" value="#{countriesAndCities.selectedCountry}" 
 onchange="submit()" valueChangeListener="#{countriesAndCities.checkSelectedCountry}">
 <f:selectItems value="#{countriesAndCities.countries}"></f:selectItems>
 </h:selectOneMenu>
 <br/>
 <h:selectOneMenu id="city">
 <f:selectItems value="#{countriesAndCities.cities}"></f:selectItems>
 </h:selectOneMenu>     
 </h:form>

```

The code does what is supposed to be, But I get the error mentioned above at first line, only when i click on England and select country choices, I dunno why, I've written the same task in Ajaxized code, and It worked fine, any hand would be dead thankful .