Hi,
I think there is something wrong with FBResultSet.getBoolean.

It gets the db object and immediately turns it into a String:
Object obj = getObject(columnIndex).toString();

thus, the second 'if case' will never work:
} if (obj instanceof Number) {

Anyway, in the third case, would it be possible to implement a more
general 'boolean checking' such as
bool b = "YyTt1Oo".indexOf(value.charAt(0))!=-1;
?

Regards
Massimo