Tracks changes billing_state field

<script>
jQuery(document).ready(function($) {
    // Tracks changes billing_state field
    $('#billing_state').change(function() {
        var selectedState = $(this).val();
        // Check if the selected area is "BG-22" (for Sofia)
        if (selectedState === 'BG-22') {
            // Sets the value of the city field to "Sofia"
            $('#billing_city').val('София');
        } else {
            // Otherwise, clear the city field value
            $('#billing_city').val('');
        }
    });
});
</script>