Removing ro option from zones

Hey all, I need to remove the ro option from an fs on a zone. Does anyone know how to do this without removing the fs and recreating it?

fs:
dir: /home/em23/prod
special: /export/zones/em23/root/ftp/prod
raw not specified
type: lofs
options: [ro]

Sample capture: -

Add a file system to the zone, using add fs.
zonecfg:test1-zone> add fs

Remove your permission here
zonecfg:test1-zone:fs> set options=[nodevices]

End the configuration.
zonecfg:test1-zone:fs> end