You definitely require an ICAO CPL with 250+ hours flying experience to apply for the Advanced Entry Second Officer Programme or an ATPL with 1500+ hours flying experience for the Transition Training Programme.
The debate regarding international applicants registering for the Ab-initio Cadet Pilot Programme (with no previous flying experience) is still going on. The website continues to mention that preference is given to HKID holders, which means you can still apply. I strongly advise you to speak to one of the recruitment guys in Cathay Pacific and get that cleared.