EventBus.getInstance().addObserver(StreamScopeAddedEvent.getEvent(), new Observer<StreamScopeAddedEvent>()
{
public void update(final StreamScopeAddedEvent obj)
{
uniqueKeys.add(obj.getScope().getUniqueKey());
autoComplete.clearText();
if (!allowMultiple || uniqueKeys.size() >= maxItems)
{
autoComplete.setVisible(false);
instructions.setVisible(false);