                           <local></local>
                                <is-readonly></is-readonly>
                            </number>
                        </xf:instance>
                        <xf:bind nodeset="area" constraint="for $i in xs:integer(.) return $i ge 100 and $i le 999" type="xs:integer"></xf:bind>
                        <xf:bind nodeset="local" constraint="matches(normalize-space(), '^[0-9\s]*$') and string-length(translate(normalize-space(), ' ', '')) = 7"></xf:bind>
            