Code not working in rdlc report

j9070749

Hello,

I am creating a c# Winforms Application, using Microsoft Visual Studio 2010.

Within this project I created a rdlc report, which is used in a report viewer.

I've added a dataset, and when the program is ran, the fields display fine. The fields display as [Field1] or [Firstname] in design view, and show their actual value when the program has ran.

I have added a table into the report which showes item description, quantity and price. I want to find the total of the price of the items. I have tried entering in the textbox =Sum(itemunitprice) or =Sum(fields!itemunitprice.value), and when the program has ran it doesn