Attachment.AfterUpdate Property (Access)
Returns or sets which macro, event procedure, or user-defined function runs when the AfterUpdate event occurs. Read/write String.
expression An expression that returns an Attachment object.
Valid values for this property are " macroname" where macroname is the name of a macro; "[Event Procedure]" which indicates the event procedure associated with the AfterUpdate event for the specified object; or " = functionname () " where functionname is the name of a user-defined function.