356A purge brake

[speedwell]

hy everybody just a few help    ,I know the method to  purge  brakes : to move away more to more close to the fluid  brakes bottle
but front 356 brakes  have 2 braking cylinders with before by which do I have to start??? that which this finds in with arrived of the liquid or the other??
which one 
the fluid arrives by the lower cylinder
thanks for your reply
speedwell

[Shubee2 (DSK)]

you bleed the bottom first as the air raises to the top