Spawn object only on game window

How can i spawn objects randomly but always only on visible game window?

bump

create object :

on layer (0)

x : random(viewportleft(0),viewportright(0))

y : random(viewporttop(0),viewportbottom(0))

if you want the whole object to be within the viewport you should add or subtract object width and height to those values.

LittleStain thanks for reply

So you only have to use the x-position and set the y to viewportbottom(0)+0.5*objectheight.

Yeah that is progress for me thanks :D