in the rex's robot challenge FW tutorial

here : http://rrc.dannysrobots.co.uk/

I want to use the pneumatics system as high pressure pneumatics are way out of my price range. My question is , as i have never dealt with pneuamtics before i want to know if it is ok to enter into a fra event . I have read through the rules on pneumatics but im really not sure whether it would pass tech check from a general safety point of view.

any help appreciated tom .