Any validity of UAE residence visa, to get VOA at HongKong

Hi, i am an indian residing in UAE,planning to tour Hongkong and Macau,but my uae one is only valid for next 4 months, is this will be a problem to get VOA at Hongkong airport? Please let me know as i am planning in the end of Nov-013. Also if there is any issue,is there any way to get it via any no objection letter from chineese embassy, something like that.