Problems using Catwalk to set fields to NULL (or None)

[wrb]

Hi,

I believe there is a bug with using Catwalk to set field values to
"NULL" or None. On the other hand, it appears to "read" or show None
fields properly. I've only checked this for DecimalCol value fields.
BTW< I'm currently running TG 0.9a2

hope this helps --- Warren.