how can i modify your ExpandableItem name?

[kscMaster]

how can i modify your ExpandableItem name when i open weiget?
i use code below this line:
es_selector.setExpandableSelectorListener(new ExpandableSelectorListener()
{
@OverRide
public void onCollapse()
{
Logger.e("ware"," adadad" );
es_selector.getExpandableItem(0).setResourceId(R.string.choose_type);
}

        @Override
        public void onExpand()
        {
            Logger.e("ware"," adadad" );
            es_selector.getExpandableItem(0).setResourceId(R.string.narmal);
        }

        @Override
        public void onCollapsed()
        {Logger.e("ware"," adadad" );
            es_selector.getExpandableItem(0).setResourceId(R.string.choose_type);
        }

        @Override
        public void onExpanded()
        {Logger.e("ware"," adadad" );
            es_selector.getExpandableItem(0).setResourceId(R.string.narmal);
        }
    });

i can see Log message but the ExpandableItem name didn't modifed,if you have spare times，tell me please!