How to refit a roca toilet cistern lid!?

if its a push button type flush" you feed the silver push button through the hole in the lid, then push the button back down,as if you were flushing it, there should be a big sivler ring,that you insert in to the hole, turn it clockwise over the push button.and when its tight thats what holds the lid down,,, so hold the button down with the lid on , and screw the silver ring into it,,,

k
April 2011