Checkbox Troubles

[Vexy]

Flash deselects the checkboxes for some reason, but using this script will work

var listenerObject:Object = new Object();
listenerObject.click = function(eventObject:Object) {
if(chkOD_status== false){
chkOD_status = true;
} else if(chkOD_status == true){
chkOD_status = false;
} else {
chkOD_status = true;
}
chkOD.addEventListener("click", listenerObject);

if(chkOD_status == true){
chkOD.selected = true;
}