ACC2000: Valid Sum() Function Returns #Error? in Calculated CTRL (199355)

MORE INFORMATION

You can use aggregate (totals) functions to calculate results only for fields, not for controls. Examples of aggregate functions are Sum(), Avg(), and Count().

Steps to Reproduce Behavior

1. Create a new form based on the Orders table from the sample database Northwind.mdb.
2. Add a text box to the form bound to the Freight field of this table. Set the following properties:

      Text Box
      ----------------------
      ControlName: Freight
      ControlSource: Freight
   					

3. Add an unbound text box to the form. Set the following properties:

      Text Box
      -----------------------------
      ControlName: Test1
      ControlSource: =Sum([Freight])
   					

4. Add another text box to the form. Set the following properties:

      Text Box
      ----------------------------
      ControlName: Test2.
      ControlSource: =Sum([Test1])
   					

5. View the form in Form view. Note that #Error? appears in the second and third text boxes (Test1 and Test2). Because you cannot use the Sum() function on a calculated expression, Test2 is invalid. This causes all calculated expressions on the form to return "#Error?."

If you remove Test2 from the form, Test1 will display the correct value.