Specify multiple LDAP auth hosts in web gui for Squid

[dsefcik]

I apologize if this covered already, I could not find it using the search tools here.

My question is how can I specify multiple ldap auth hosts in the web gui for squid? On a regular squid box I would configure something like this in the config file

-P 10.1.4.112:389,10.2.4.111:389,10.3.4.111:389

but if I try that in the ldap field in the pfsense web gui it complains that it needs a valid hostname or IP.

TIA