Linking to Custom Properties

I'm trying to link notes in my drawing to a couple customproperties in the model

The properties are:

Manufacturer #
Manufacturer

The problem I'm having is if 'Manufacturer #' is lited in theproperties above 'Manufacturer' the property is not available inthe pull down list. I've also noticed that if I change'Manufacturer #' to 'Manufacturer_#' I can see both in the pulldown list.

Any ideas?

System Specs:
SolidWorks Office Premium 2008 SP5.0
PDMWorks Enterprise 8.4 B168
Dell T5400, Xeon CPU x5450 @ 3.00Ghz, 3.25 GB Ram
XP Pro SP3
nVidia Quadro FX 4600SolidworksDrawings And Detailing