SIPREC session-recording-group configuration

Hi all, I am new to the acme packet SBC (and SIP in general), I have been tasked with configuring our SBC for redundancy and I was trying to do that using a recording group.  I have defined two SRS's but when I try to add the SRS's to my session recording group, I only seem to be able to add one at a time.  

 

According to the documentation I have, the command should look something like this:

 

ACMEPACKET(session-recording-group)# session-recording-servers SRS1,SRS2

 

However, when I run this command, it returns:

 

invalid session recording server name 'SRS1,SRS2'

 

I can add them individually using