Hashes are special lists. Normal lists, like yours, use numbers as indexes, like an_array[15], if you look into AS3. But you can have an_array[pumpernickel]. I was learning Ruby, and I picked up the term, so it might not be QUITE the right word for AS3/Stencyl...
I wasn't sure what was causing the problem, so I guess that probably wont fix it. I thought it might have been an issue with the list itself, or something.