Calculate a subreport

[pablavo]

Hi

I have a subreport within a group header. I have a currency field in there and the there will be many records within one group. At the Group footer of the report I want to calculate all of the amounts that come from the subreport within that Group
The standard sum function =Sum([Sent]) wont work because it's a subreport. So I guess I have to add a different syntax referencing the subreport?

does anyone know what that might be?

thanks