es_setinfo ip_address 100.100.100.100
es_setinfo plr_count 100
es_setinfo ip_address_and_port event_var(address)
es_setinfo user_id event_var(userid)

es_token ip_address event_var(address) 1 ":"
es_keycreate Players event_var(userid)
es_keycreate Players server_var(ip_address)

es_keygetvalue plr_count Players server_var(ip_address) PLAYER_COUNT
es_keysetvalue Players server_var(user_id) IP server_var(ip_address)

if (server_var(plr_count) equalto 100) then es_setinfo plr_count 0

es_setinfo foobar server_var(plr_count)
es_math foobar + 1
es_setinfo plr_count server_var(foobar)

es_keysetvalue Players server_var(ip_address) PLAYER_COUNT server_var(plr_count)