IRule for pool member priority

that exactly what i would like to do.

but is it possible to do this automatically?

i don't want to do this manually, i heard that there is script that can handle this but i didn't understand the script at all.e.g.

[root@ve10:Active] config  b virtual bar list
virtual bar {
   snat automap
   pool foo
   destination 172.28.19.252:23
   ip protocol 6
}
[root@ve10:Active] config  b pool foo list
pool foo {
   min active members 1
   monitor all tcp
   members {
      200.200.200.101:23 {
         priority 10
      }
      200.200.200.111:23 {
         priority 5
      }
   }
}
[root@ve10:Active] config  cat /config/user_alert.conf
alert BEZEQINT_TEST "Pool member 200.200.200.101:23 monitor status up." {
   exec command="export REMOTEUSER=root;/usr/bin/tmsh delete sys connection ss-server-addr 200.200.200.111"
}