[CentOS] upstart question

I am trying to migrate from old /etc/inittab to upstart. I am close.

I used to have 2 or 4 lines in /etc/inittab to start 2 or 4 processes. v1:2345:respawn:/home/silentm/bin/myfile -port 4000 v2:2345:respawn:/home/silentm/bin/myfile -port 5000

something like that...

So now I create a file /etc/init/myfile.conf and in it I put:

respawn script /home/silentm/bin/myfile -port 4000 /home/silentm/bin/myfile -port 5000 endscript

Only the first process is created. I think I have to do something with "instance 2" but I wasnt getting results with that either.

What am I missing in the myfile.conf to get the two processes running ?

Thanks,

Jerry