How do I create object on an animation frame of another object?

I would like to create a new object on the 3rd frame of animation of a different object. How do I express that in C3?

I thought maybe:

Create object2 on layer 0 at (object1.AnimationFrameCount("2").X, object1.AnimationFrameCount("2").Y)

But C3 won't accept that.

Object A = The one you want to spawn

Object B = The object that triggers the spawn

Event: Object B compare frame (3)

Action: Create Object A

If mean a certain location on the object, then you need to create and image point.