Exclude System.Progress and System.IProgress<T> from code coverage

Hi,

I'm not able to exclude the System.Progress and System.IProgress<T> from code coverage. I tried to add them in filtering like this:

But with no luck.

When I use the right click menu in dotCover (while in VS), a weird rule is created, which seems to only affect that specific case:

So, how could I do it?

Thanks in advance!

Fred