mark warburton

hi i am trying to change my transmission fluid (advised by honda that it needs changing every 70k) i can find the drain plug by removing the under tray ,its a 3/4 inch square headed bolt. I cannot find the fill plug. Looked online and can`t seem to see any posts that look like my engine .Their is no dipstick .The only thing i can find is these bolts on the gearbox side behind passengers side wheel .I have taken air box off with no luck either. help thanks mark