solaris brand zone

Hi,

I try to create a solaris 10 brand zone.

zonecfg -z y

Use 'create' to begin configuring a new zone.

zonecfg:y> create -t SYSsolaris10

commit

exit

zoneadm list -cv

 ID NAME       STATUS   PATH             BRAND   IP

  0 global      running   /              solaris  shared

  - y        configured /system/zones/y       solaris10 excl

 zoneadm -z y install

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

  rpool/VARSHARE/zones/y

you must specify an installation source using '-a', '-d' or '-r'.

zoneadm install

In the above way i can create solaris 10 brand zone only if i give a flar after -a?

If i like to create from template