setting default regexp_array in 1.90

["Mark Frost" <mfrost @ ncd . com>]

I'm trying to make a default for the "advertise" variable in 1.90.
I seem to have no problem entering in a single value as in

'advertise',            '/ncd.com$/', # if regexp matches address show list


However, I want to add more than one regexp there.  This of course, works
fine if I add it to the config file by hand (or via admin commands rather),
but I want to set things up so that admins here can start with a reasonable
set of defaults).
 
I've tried

'advertise',            '/ncd.com$/ /ncd.co.uk$/', # if regexp matches address show list

and

'advertise',            '/ncd.com$/
/ncd.co.uk$/', # if regexp matches address show list

but whenever I list more than one it always comes up empty.

What am I doing wrong?

Thanks

-mark frost 
 network computing devices