(SOLVED) How do I spawn bonuses at the right position?

hi

in my game i have spawning platforms every 1.5s moving from right to left

http://s28.postimg.org/9ks9255zf/horizontal_spawn.jpg

the platforms actually don't correctly spawn from the right side, outside the frame, where i put the spawn object.

(SOLVED THIS PART)

also i need to create "spawn" some bonuses every 1.5s BUT on the top of those floating platforms

actually they spawn at the wrong places

http://s13.postimg.org/g6vsw5fdh/horizontal_spawn2.jpg

i need the bonuses be spawned at the top of the floating platforms where i put the original point.

Maybe use: platform.X & platform.Y + platform.Height/2 + object.Height/2? That would spawn it in the center of the top of the platform.