Help with Expression Builder

[Don]

I'm trying to build a simple report. It will show debtors, budgeted amounts
and how much was actually paid to those debtors. I've tried using the
expression builder, though I've never used it before I somehow believe I
know how, apparently not! I chose the location of where the data is stored
and the expression builder put it into the expression builder window. When
I run the report I get this #name?. I guess that means it doesn't recognize
what I'm trying to display. I'm confused. Here's the expression:
=[Reports]![Expenses Report]![Total Of expense]
So I'm trying to build a report based on a table and this report (expenses
report). The field I want to display is (Total Of Expense) but I get the
#name?

The Expenses Report works well and show much more than what I want in this
new report.
Can you tell me what I've done wrong?
Thanks,
Don...........

[Jana]

Don:

You can't reference a field on a report unless that report happens to
be open at the same time your 'simple report' is open. What you'll
have to do is use the expression builder to recreate that number, or
have the Expenses Report open at the same time that the simple report
is open.

HTH,
Jana