I'm not quite sure what you're asking here. If you prevent values over 99 inches, why is 13.5 inches a special case worth mentioning? Is that you really mean than only values between 0 and 99.9 or so are allowed?
If so, a converter isn't what you need. You need a RangeValidator. Basic JSF stuff.
An IDE is no substitute for an Intelligent Developer.
I’ve looked at a lot of different solutions, and in my humble opinion Aspose is the way to go. Here’s the link: http://aspose.com
subject: How to prevent values over 99inches but still allow 13.5 inches