Month wise cumulative total in column

Question

I need cumulative aggregate after each column for my report. I have a dataset with following data samples.

ProductName *Transdate* Quantity

1. A 21-Nov-13 100

2. A 1-Nov-13 50

3. A 1-Dec-13 40

4. A 1-Jan-13 150

5. B 11-Nov-13 30

6. B 2-Dec-13 20

7. B 13-Dec-13 10

8. B 12-Jan-13 80

I want a report which look like below. That means Product wise each month total and Cumulative total. I am able to get month wise total value. Only need suggestion for month wise cumulative total.

**

Product Nov'13 Cumulative Total Dec'13 Cumulative Total Jan'13 Cumulative Total

**

1. A 150 150 40 190 150 340

2. B 30 30 30 60 80 140

Answer 1

In the proper textbox use RunningValue function: =RunningValue(Fields!Quantity.Value,SUM,"Category1"):

And your report will display values as follows: