SNAT based on destination IP

[root@iris:Active] config  b class myservers list
class myservers {
   {
      host 192.168.1.1
      host 192.168.1.2
      host 192.168.1.3
      host 192.168.1.4
      host 192.168.1.5
      host 192.168.1.6
   }
}

[root@iris:Active] config  b rule myrule list
rule myrule {
   when CLIENT_ACCEPTED {
        if {[class match [IP::remote_addr] equals myservers]} {
                switch [IP::local_addr] {
                        "10.1.1.1" { snat 172.1.2.100 }
                        "10.2.2.2" { snat 172.1.2.101 }
                        "10.3.3.3" { snat 172.1.2.102 }
                        default {  do something }
                }
        }
}
}