Marco to Audit Trail

[Samantha]

I am using Wrox Microsoft Access 2010 Programmer's Reference and I am attempting to recreate the audit trail example included. I have checked everything over and I don't see where I went wrong, but it does not create new records with the information. Opening the application log it state that The identifier '[prmNewValue]' could not be found. It references the source object being tblProposals.AfterUpdate. That data macro contains:

RunDataMacro
macro Name: tbl.Proposals.dmAuditTasks
Parameters
prmAction: "Update"

Inside of the macro that it is calling, each field that I am tracking is set to [ProjectDescription], [Manager], [ServiceAddress] and so on.

Any Ideas