active/standby fwsm in multiple mode

Guys,
i have two fwsm's in active/standby failover and running in multiple mode "multiple contexts already there", i need to create a new virtual context , do i have to create it on both units (active anf the standby) or just create it on the active one???

just create it on the active one. The standby one will replicate the configuration of the active pix.