Configuration Group

Hello All,

I am trying to learn how to use configuration groups. I wrote this small configuration to set the system hostsname using configuration group. But its not working as expected. I expected the hostname to change to "Group'

krishna@R1# set groups Test system host-name Group

[edit]
krishna@R1# set apply-groups Test
[edit]
krishna@R1# commit and-quit
commit complete
Exiting configuration mode

krishna@R1>

Can anyone please tell me what's wrong with this config?