List<String> targetList = new ArrayList<String>();
targetList.add("_self");
targetList.add("_top");
targetList.add("_parent");
targetList.add("_blank");
AutoCompleterTextBox targetTb = new AutoCompleterTextBox(targetList);
targetTb.setWidth("300px");
targetTb.setText(invokingWidget.getTarget());
targetTb.setSuggestionWidth(100);
VkDesignerUtil.showAddAutoCompleteTextDialog("Please provide Form Target", targetTb, new IDialogCallback() {
@Override
public void save(final String target) {
final String prior = invokingWidget.getTarget();
UndoHelper.getInstance().doCommand(new Command(){