- (BOOL) textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string
{

    // абвгдеёжзийклмнопрстуфхцчшщъыьэюя
    // АБВГДЕЁЖЗИЙКЛМНОПРСТУФХЦЧШЩЪЫЬЭЮЯ

    NSCharacterSet* charset = [NSCharacterSet characterSetWithCharactersInString:@"абвгдеёжзийклмнопрстуфхцчшщъыьэюя АБВГДЕЁЖЗИЙКЛМНОПРСТУФХЦЧШЩЪЫЬЭЮЯ"];

    if ( textField.tag == 1 )
    {
        NSString* filtered = [[string componentsSeparatedByCharactersInSet:[charset invertedSet]] componentsJoinedByString:@""];

        //return ([string isEqualToString:filtered]);

        return (([string isEqualToString:filtered]) && !(([textField.text length] + [string length] - range.length) > 32));

    }
    else if ( textField.tag == 2 )
    {

        NSString* filtered = [[string componentsSeparatedByCharactersInSet:[[NSCharacterSet characterSetWithCharactersInString:@"0123456789"] invertedSet]] componentsJoinedByString:@""];

        //return ([string isEqualToString:filtered]);
        return (([string isEqualToString:filtered]) && !(([textField.text length] + [string length] - range.length) > 9));
    }

    return NO;
}