There are two different criteria in Smart Groups: "Username" and "Local
User Account." It seems like the OP was referring to "Username." I've
tried every permutation of actual usernames (as listed in the device
records) I can think of, but no devices...
Script worked great to put our preferred wi-fi network atop users'
network lists. But, putting the preferred network into Parameter 5 and
then the network to remove in Parameter 7 didn't seem to work -- it put
the preferred network atop the list but ...