Share directory to lxd from host

in new ubuntu22 i try to share directory
lxc config device add oracle disk source=/software/ path=/software/
where directory /software exist (empty) in container oracle with chmod 777
Error: Invalid devices: Device validation failed for “disk”: Failed loading device “disk”: Unsupported device type

i forgot to give a name it working now
lxc config device add oracle software disk source=/software/ path=/software/

then disk software add to oracle container.