I can't use Pgup, Pgdn in dayz to build

[Troythenoob]

I have been playing Arma 2 dayz for years now, and while I could never get the base building part to recognize my page up or page down button to raise or lower the objects, (The keys are on my numpad 9 and 3 key), I use to be able to do small up and down increments with my 8 and 2 key. till I could get the roof part or whatever I was building to snap up the rest of the way. 

With epoch 1.07.1 now no keys raise or lower objects for me. My number keys only look around.  Has anyone run across this issue with their Pgup PgDn not working and how I can get it to be recognized even if it is a 2 key combonation.