>Hi Frank,
>
>If ou want ot modify the method, there is an overload of the mmType.IsEmpty() method that allos you to pass a second boolean parameter that checks for a zero valid value:
>

>mmType.IsEmpty(byte minAge, true)
>

>This should validate the zero value as valid.

Thanks Antonio,

I can't remember what I did to solve this, but I'll bear in mind your suggestion if/when I get the chance to revisit it.