Spine doesn't currently support running scripts inside Spine. However, you can export to JSON, manipulate the JSON, and import it back into Spine.
I have to say, your use case sounds a bit odd. You wouldn't want to copy an animation into 200 skeletons. Doing that would mean loading the same animation data many times, once for each skeleton. Also if you change the animation, you'd have 199 copies that don't match.
Typically to use the same animation with many different characters you would setup a single skeleton, using skins to achieve the different looks for the many characters. You'd then have one set of animations that would work with all your skins.