Boxhelper Not Working

I just used boxhelper and found that when you select a number, it does not remove the numbers that are incorrect.

Example:

"You have a hunch the 2nd digit is a 5, 6, or 7.
Possible Choices: 15, 16, 17, 25, 26, 27, . . . , 95, 96, 97
Best Guess: 56"

I input 56

Then select to enter a combination.

"Possible Choices: 15, 16, 17, 25, 26, 27, . . . , 95, 96, 97
Best Guess: 56"

Cheers~

https://www.dropbox.com/s/5c127avd5q4yaek/Casket.zip?v=0mcn

enjoy