Using animations from variables in Anim BP?

So no-one has tried on dynamically setting the used animation in anim BP? Or is it just plain impossible?

Does anyone know what type of object the editor uses when it shows dragged blendspace in the anim BP? I have started on looking to editor source, but it’s most likely too long road to follow… At runtime it should make no difference what animation sequences it evaluates as long as they match to same skeleton?