Access VBA: How To: Implement User Function Code [RESOLVED]

[Webtest]

Esteemed Forum Participants and Lurkers:
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Access 2003 VBA

I'm a gutless wonder when it comes to Access (not to mention my gross disdain for the (in)capability of documenting??? an Access design!).

I'm trying to implement a user function in an access database. For testing purposes, I have the following trivial "triple" code in module "User_Functions":

Option Compare Database

Option Explicit
Function triple(anInt As Integer) As Integer
    triple = anInt * 3
End Function

I can't seem to get this to work in a Report, or in a Query, or in a Table column (which is what I would really like to do!). My Report control looks like this:

TextBox:  Text4
Control Source:  =triple(MSI_10_10!Code)

When I try to open the Report in Print Preview, I get a popup asking "Enter Parameter Value" for "MSI_10_10" which is the name of my table. I don't want a parameter. I just want an output for each record which (for now) = (Code x 3). If I enter a value in this popup, such as "99", my Report shows "#Error" in the Text4 control for the 2 integer values for the Code in my MSI_10_10 table ... 12 & 34.