Magento 2 knockout js onchange selected value not working

I’m working on checkout page. I cannot get the selected value from the event.

My Html

<select name="addresslist" id="addresslist" data-bind="event:{ change: regionChange}">
             <option>France</option>
             <option>Germany</option>
</select>

My JS

regionChange:function (data, event) {                     
            console.log(event,"jj")
        }

I’m seeing the event console but can’t get the selected value also the selected index is not updating for options when on change even occurs