Excuse me for being dense.

I have three fields, Subject, Number_One and Number_Two.

I want the max for these two number fields summaries at each change in subject.

So I created two summary fields Summary_One, Summary_Two, each set as Max of those number fields.

When I place these two fields in my subsummary by Subject, I get correct numbers.

Then I tried adding them with another calculation field Added_Number = Summary_One + Summary_Two.

However, when I place this field in the subsummary, it do not get what I expect. I get a much larger number, the source of which I haven't found yet.

Please let me know my fundamental misunderstanding about subsummary and a calculation field based on summary fields.

Thanks again. Just when I think I've figured out this program, I find something that doesn't make sense to me.

You need to use the GetSummary function to do math with summary fields.

The light bulb over my head is now illuminated! Thanks.