importing a zpool from a directory to a different zpool name

 I have a copy of a zpool created on a disk file . this zpool name already exists in the server. so I am trying to import the zpool as a different zpool name.

the command I am using is

zpool import -f -d /ldoms/devl4/zones devl4_zones (the original zpool name) devl4_zones2 (the name I want it to be).

but I am getting errors that there are no zpools to import

I've tried it with -F and -D and neither worked... any ideas?

is it syntax? if so, what's the correct syntax to do this from a directory?