It should be P:89.212.242.33,23.236.58.114,W:127.0.0.1
My example:
"api-allow" : "P:23.236.58.114,89.212.242.33,W:127.0.0.1",
"api-groups" : "P:switchpool:addpool:removepool:restart:save:*",
Thanks, I use a conf file too (not command line) and never could get that right. I just added it this way, restarted the miner, and tested switching pools from leaserig and it works great!