I had register and book for the RSVP with iValue1...
But after I rethink and consider iValue1 will affect my supplementary line call rate and other benefit, and I decided to change iData3 ~

So do you all think I'm able to change it when i go for the booking collection?
Although I just call up and his supervisor said cannot, but I still trying my luck to collect earlier, if not I have to wait until 26 September...