IIf() / IsNull with a sub-report

[Trevahaha]

I've tried a couple things, but everything is resulting in #Error.

I have a subreport in a report containing payments.

Right now I have:

Name: totalPayments
Source: =srptPayments.Report!txtTotalPayments

Name: txtProjectBalance
Source: =([txtProjectSubTotal]) - IIf([TotalPayments]Is Null,0,[TotalPayments])

It doesn't seem to be detecting that it's null... or am I approaching this all wrong?

Trevor

 

[Trevahaha]

How embarassing.. it was just down below.
PLEASE IGNORE THIS POST

Thanks!