Dieffenbachia amonea ???

[flower]

Hi to anyone who is reading this  :) my plant has flowered and the flower has now sealed itself back up inside its leaf, does anyone know

a) can you save and sow the seed of this plant ?
b) how is this done ? temps depth of sowing  etc
c) has anyone done so with any success any advice gratefully received 

Ann-Marie :)

[flower]