adding a new volume group using perccli64 on rhel7

I have added 2 new 300GB SAS disks to a Dell T320 PowerEdge server.  It uses the PERC H310 disk controller.  The disks are seen in the PERC BIOS configuration utility and marked as ONLINE but not attached to any volume group.

I want to add a new volume group and add these 2 drives as part of it in a mirrored setup.

I boot the server, login as root and run:

# cd /opt/MegaRaid/perccli

# ./perccli64 /c0 show

...[clipped for brevity]

PD LIST :

=======

------------------------------------------------------------------------------

EID:Slt DID State DG       Size Intf Med SED PI SeSz Model            Sp Type

------------------------------------------------------------------------------

32:0      0 Onln   1 278.875 GB SAS  HDD N   N  512B ST3300657SS      U  -    

32:1      1 Onln   1 278.875 GB SAS  HDD N   N  512B MK3001GRRB       U  -    

32:2      2 Onln   1 278.875 GB SAS  HDD N   N  512B ST3300657SS      U  -    

32:3      3 Onln   0   931.0 GB SAS  HDD N   N  512B ST1000NM0023     U  -    

32:4      4 Onln   0   931.0 GB SAS  HDD N   N  512B ST1000NM0023     U  -    

32:5      5 UGood  -   273.0 GB SAS  HDD N   N  512B X410_S15K7288A15 U  -    

32:6      6 UGood  -   273.0 GB SAS  HDD N   N  512B X410_S15K7288A15 U  -    

------------------------------------------------------------------------------

the 2 at the end are the new drives (32:5 and 32:6)

Now, I use the following command to create the new volume group:

# ./perccli64 /c0 add vd type=raid1 size=300g names=opt drives=32:5,32:6 pdperarray=2

syntax error, unexpected TOKEN_UNKNOWN, expecting TOKEN_DRIVES

What am I doing wrong here??