I think u r following some wrong process..
Below is an example
FIRSTNAMEBIRTHPLACEVALUE
ERIKLONDON0
ERIKLONDON3
HARRYEDINBURGH2
HARRYEDINBURGH5
1. Add a indicator in the table and go to indicator properties.
2. Simply Add the column name like Sum(Fields!Calls.Value).
3. Select Numeric as Measurement Unit.
4. Then in the indicator states just give the start and end value in the respective