I can't understand why your getting that result; I was under the impression that wingdings 2 is standard, with ms office. I'll have a look and see what I can do to make it work clearer.
OK, What I've done is added an extra sheet, I've kept the one for wingdings 2 for people who can display that font; I've also included one with Y/N in Times New Roman. I hope that is better.
