Java EE (Java Enterprise Edition) General Discussion

I have great problems with selectBooleanCheckbox. I have tried this (I have copy/paste it from my another project where it worked well):

<h:selectBooleanCheckbox id="checkbox1" 
styleClass="selectBooleanCheckbox" required="true"></h:selectBooleanCheckbox>

public String doButtonAction() {
    Boolean checked = (Boolean)getCheckbox1().getValue();
}

The problem is that above code always returns null.

Then I also tried:

<h:selectBooleanCheckbox id="checkbox1" value="#{myForm.checked}"
styleClass="selectBooleanCheckbox" required="true"></h:selectBooleanCheckbox>

boolean checked = false;

public boolean getChecked() {
	return checked;
}
public void setChecked(boolean c) {
	checked = c;
}

public String doButtonAction() {
    Boolean checked = (Boolean)getCheckbox1().getValue();
    // or:
    //Boolean checked = getChecked();
}

The problem with above code is that setChecked() method is never called so "checked" field is always false. Why?