How to use option "-m copy" of zoneadm command?

I want to make a copy of one of my zones. As I read im man I have to use "-m copy" option of zoneadm command - to have a copy instead of zfs clone of my old zone.

My system: SunOS 11.2 sun4v sparc sun4v  0.5.11-0.175.2.12.0.5.0

But I got an error:

# zoneadm -z ez4 clone -m copy z1

The following ZFS file system(s) have been created:

    zonepool/zones/ez4

/usr/lib/brand/solaris/clone: -m: unknown option

brand-specific usage:

clone [-c profile.xml | dir] {sourcezone}

        The -c option gives a profile or a directory of profiles to be applied to the system after clone.