Hi,
ArrayMaker allows you to reference prefabs. Can you double check on you end?
PlayMaker next release will have a new type FsmArray, and it will be a regular fsm variable. So this is coming soon.
Meanwhile, ArrayMaker is in my knowledge the only solution, and it's totally fine for artists, and because it has a full inspector where the artist can set up and reference the content of the array or hashtable.
Bye,
Jean