jjefferies5, how did you purchase your economy ticket, and what is the fare code?
Most people in your situation (asking beginner questions, low # of posts, with no OneWorld partners listed in your programs) would probably have just bought the lowest fare from Expedia or a travel agent, in which case your ticket is probably not even upgradeable, as CrazyJ82 pointed out. To upgrade on CX, you have to start from one of the more expensive economy fares, which the majority of flyers don't buy.
Also, you were also asking about upgrading with miles. Where are the miles coming from to do your upgrade? You have Asia Miles in your account already?