OK, my post was misleading. I don't want to have the alternatives but based on the current selection excluding some values. Currently the button ignores the current selection of this dimension and applies all values except the given.
Anyway, I probably have to live with that. And again, thanks for sharing, your link is pretty helpful in a couple of other scenarios.
That kind of selection is possible as well. Assume your field is "Country" and you want the button to exclude "Brazil" and "Canada". Your search/select string would be:
