Following on from what Pascal said, I'm also not happy that your False2
case - which is the default case - is equivalent to

bMFE = bMFE

Is this really what you want?

However, I think Pascal is on the right track. Do you have "Option
Explicit" at the top of your code? If not, you should. Otherwise, a typo
like MFE instead of bMFE will not cause a compile error.