Hi, Abhilash
The mdb file can not be modefied, i only have the "read-only“ permission. And even if i can write, there will be more problems. In this case, C8 on date 2014/06/24 doesn't have any data. In other cases, C1 may lost or C9/C10 will be added. It's hardly to ensure every combination exist in database. The point we measure is not stable every time.
How about this workaround.
if(GridValueAt(i, CurrentColumnIndex, CurrentSummaryIndex)) = "" then
(
min:=0;
max:=0;
)
And how to debug the code like in visual studio.Thanks.