nvram commit problems

I'm having problems with setting some stuff in my AC87U's NVRAM

I either get this:

# nvram set vlan1ports="1 5 7*”

> nvram set vlan2ports="0 7u"

> nvram set vlan3ports=“2 7t"

usage: nvram [get name] [set name=value] [unset name] [show] [commit] [save] [restore] [erase] ...

or I manage to put all my settings in and then enter nvram commit but nothing happens.
I've closed terminal, come back in and done nvram show but no change.

I've tried rebooting and even factory defaulting but no...

nvram commit problems