Report Calculation Trouble

[DCH]

Can anyone help me with this expression?

I have a report linked to a query with the following fields bieng pulled
from various tables:

[NRP] Currency: Non Recurring Price
[#] Number: Quantity
[TDAPP] Yes (0)/No(-1): Term Discount Applicable

In the report I have created the following calculated fields:

[TotalNRP] = [NRP]* [#]
[TDNRP] =IIf([TDAPP]="-1",[NRP]*[#],"0")

Both of which perform well. My problem is I need to total the TDNRP column
of the report.
I tried creating a new field called [TotalTDNRP] =sum
(IIf([TDAPP]="-1",[NRP]*[#],"0")) and it didn’t work.

Any help would be greatly appreciated.

Many thanks, David.

 

[Ofer Cohen]

What do you get? Error or wrong resault?
Does this formula works when not trying to sum on it?

Any way, check the followings:
1. Yes/No fields and numbers don't need double quotes, try:
sum(IIf([TDAPP]=True,[NRP]*[#],0))

2. Check for Nulls
sum(IIf([TDAPP]=True,Nz([NRP],0)*Nz([#],0),0))

3. Make sure the text box where this formula located in doesnt have the
name: TDAPP, NRP, [#]

4. The Sum need to be on the Report Footer and not the PageFooter, it won't
work on the page footer