buttonSelect selected options don't clear

I have a toolbar with some buttonSelect objects added.

After the user selects an item from the drop down list, I would like to clear that selected item so that when they click the drop down they do not see the previous item selected.

I don’t see an API to do that… how can I clear it?

You may try to set the onClick event that will select nonexistent option on click:

/if it is option/
if (toolbar.getType(id) == “buttonSelectButton”){