/spawner {set mob} is now different

[vinmeistr]

for some reason when i type /spawner skeleton for someone that wanted a spawner moved it said correct usage /spawner when i typed /spawner it showed the spawner buying info which was suppose to be /aspawner. can someone explain to me what changed in the new 1.7 and the new way to change spawners? thank you for your help. and sorry if was not aware of something happening.

[Pepsi87]

Dont worry i was confused too the new command is /mobspawner {mobtype}