Grid grid = new Grid(ioList == null ? 1 : ioList.size(), 2);
if (ioList != null) {
for (int index = 0; index < ioList.size(); index++) {
final TaskPropertyRef io = ioList.get(index);
CheckBox checkBox = new CheckBox();
checkBox.addValueChangeHandler(new ValueChangeHandler<Boolean>() {
@Override
public void onValueChange(ValueChangeEvent<Boolean> event) {
Boolean val = event.getValue();
if (val == null || val == false) {
if (selectedIos.contains(io)) {