jsf selectOneMenu strange itemValue - ajax

Question

In my app I have selectOneMenu to select month.
<h:selectOneMenu value="#{register.monthOfBirth}">
<f:selectItems value="#{register.dateValues.monthsList}" var="month" itemLabel="#{month.valueLabel}" itemValue="#{month.valueValue}"/>
<f:ajax listener="#{register.monthChanged}" render="messages" />
</h:selectOneMenu>
Here's my DateValues class which I use to populate selectOneMenu's:
public class DateValues {
public static class Values{
public String valueLabel;
public String valueValue;
public Values(String valueLabel, String valueValue){
this.valueLabel = valueValue;
this.valueLabel = valueValue;
}
public String getValueLabel(){
return valueLabel;
}
public String getValueValue(){
return valueValue;
}
}
public Values[] daysList;
public Values[] monthsList;
public Values[] yearsList;
public DateValues(){
daysList = new Values[31];
for(int i=0;i<31;i++){
daysList[i] = new Values(""+ (i+1),""+(i+1));
}
monthsList = new Values[12];
for(int i=0;i<12;i++){
monthsList[i] = new Values("" + (i+1),"" + (i+1));
}
yearsList = new Values[109];
Calendar cal = Calendar.getInstance();
int currentYear = cal.get(Calendar.YEAR);
int first = currentYear - 108;
for(int i=0;i<109;i++) {
yearsList[i] = new Values("" + (first + (108-i)),"" + (first + (108-i)));
}
}
public Values[] getDaysList() {
return daysList;
}
public Values[] getMonthsList() {
return monthsList;
}
public Values[] getYearsList() {
return yearsList;
}
}
In the #ManagedBean I've got an ajax listener:
public void monthChanged(){
System.out.println("New month is month number " + monthOfBirth);
}
What I get in the output is:
"INFO: New month is month number dyplom.dyplom.date.DateValues$Values#79f6099"
instead of (for example) 2 (number of month, so February)
What did I do wrong?
EDIT:
GENERATED HTML:
<h2><select id="j_idt56:j_idt70" name="j_idt56:j_idt70" size="1" onchange="mojarra.ab(this,event,'valueChange',0,'j_idt56:messages')"> <option value="dyplom.dyplom.date.DateValues$Values#32b0c37e">1</option>
<option value="dyplom.dyplom.date.DateValues$Values#72f29f31">2</option>
<option value="dyplom.dyplom.date.DateValues$Values#16b184ec">3</option>
<option value="dyplom.dyplom.date.DateValues$Values#608dad97">4</option>
<option value="dyplom.dyplom.date.DateValues$Values#757fc606">5</option>
<option value="dyplom.dyplom.date.DateValues$Values#17a1f02e">6</option>
<option value="dyplom.dyplom.date.DateValues$Values#89f6821">7</option>
<option value="dyplom.dyplom.date.DateValues$Values#196d52f3">8</option>
<option value="dyplom.dyplom.date.DateValues$Values#5860dc8f">9</option>
<option value="dyplom.dyplom.date.DateValues$Values#3f305d9d">10</option>
<option value="dyplom.dyplom.date.DateValues$Values#520ed4">11</option>
<option value="dyplom.dyplom.date.DateValues$Values#b4b8076">12</option>
</select>
</h2>

Answer 1

Problem solved!
I'm so ashamed of the mistake I made!
Take a look at the constructor of Values:
public Values(String valueLabel, String valueValue){
this.valueLabel = valueValue;
this.valueLabel = valueValue;
}
As you can see I've been setting up twice valueLabel with wrong variable and moreover I didn't set valueValue at all!
Now as I corrected constructor:
public Values(String valueLabel, String valueValue){
this.valueLabel = valueLabel;
this.valueValue = valueValue;
}
everything is alright :)
Sorry for the mess!