Rotate 2 objects in opposite direction

[qle]

I am having trouble getting 2 objects to rotate in opposite directions.

I keyed one object to rotate 360, and the other to -360 in the same Y axis. But they both ended up rotating the same direction. Any help will be appreciated.

[joojaa]

set upa na expression:

object1.rotateZ=-1*object2.rotateZ

offcourse if the object 2 space is the other way around just delete -1 or use direct connections for sake of simpicity!