Checking to see if the length of the argument is less than 2 doesn't really do the samething as check to see if it is 99 or less because I can type in "ab" and it will pass your range check. I know I said you don't have to make sure they entered a number, but you do need to make sure your range checking doesn't pass unless it is a valid response.
I am probably confusing you some, but I don't want to give you the solution without making you think about it.
Bill