I gave EP desk a call yesterday and ask for the same thing and I was told by a wonderful agent that they'll try to do their best...

Surprise... when I got home today there was a message from EP desk telling me to call them back. I called back and I was told that the award reservation have been confirmed!!!! I was quite surprise given that the agent told me there's a slim chance. I made my reservation at the same time and will get my upgrade when I call to ticket it tomorrow.

Thanks CP....