Based on this documentation - http://docs.fusioncharts.com/charts/contents/advanced/special-chars/SpPunctuation.html - I should be able to put special characters in my chart if they are html encoded. I've tried doing this in our product using Δ but rather than seeing the special character I see the text. I had wondered if Δ was just unsupported so I made a plunker to test out the special characters specifically mentioned in the docs but they dont work either.
See plunker:
http://embed.plnkr.co/3hSVO0apUL2zJAJTQZJO/preview
