Presumably there is some condition that determines which numbers you want to sum. If that's so, you need to do something like this:
1. Place the field to be summed in the Detail band (let's call this FieldA).
2. Place another field in the Detail band (FieldB). Set its expression to something like:
IIF(<condition>, FieldA, 0)
where <condition> is the expression that determines if you want to sum the value.
3. Calculate the sum of FieldB in the usual way.
4. Make FieldB invisible (e.g. by setting its foreground colour to the same as the report background colour).
I think that will give you what you want.
Mike
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Mike Lewis (Edinburgh, Scotland)
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