I have input XML Document:

<?xml version="1.0"?>
<ediroot>
    <interchange Standard="EDIFACT" Date="080403" Time="1422">
        <sender>
            <address Id="5400102000086" Qual="14"/>
        </sender>
        <receiver>
            <address Id="5425007009989" Qual="14"/>
        </receiver>
        <group>
            <transaction Control="1" DocType="ORDERS" Version="D"
Release="96A" Agency="UN" Association="EAN008" Name="Purchase Order
Message">

                <segment Id="DTM">
                    <element Id="DTM01" Composite="yes">
                        <subelement Sequence="1">2</subelement>
                        <subelement Sequence="2">200804080700</
subelement>
                        <subelement Sequence="3">203</subelement>
                    </element>
                </segment>
                <segment Id="DTM">
                    <element Id="DTM01" Composite="yes">
                        <subelement Sequence="1">137</subelement>
                        <subelement Sequence="2">200804031422</
subelement>
                        <subelement Sequence="3">203</subelement>
                    </element>
                </segment>
                <loop Id="SG02">
                    <segment Id="NAD">
                        <element Id="NAD01">BCO</element>
                        <element Id="NAD02" Composite="yes">
                            <subelement Sequence="1">5400102000086</
subelement>
                            <subelement Sequence="3">9</subelement>
                        </element>
                    </segment>
                </loop>
            </transaction>
        </group>
    </interchange>
</ediroot>


This Xsd that  used to validate xml Document

<?xml version="1.0" encoding="UTF-8"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"
elementFormDefault="qualified">
  <xs:element name="ediroot">
    <xs:complexType>
      <xs:sequence>
        <xs:element ref="interchange"/>
      </xs:sequence>
    </xs:complexType>
  </xs:element>
  <xs:element name="interchange">
    <xs:complexType>
      <xs:sequence>
        <xs:element ref="sender"/>
        <xs:element ref="receiver"/>
        <xs:element ref="group"/>
      </xs:sequence>
      <xs:attribute name="Date" use="required" type="xs:integer"/>
      <xs:attribute name="Standard" use="required" type="xs:NCName"/>
      <xs:attribute name="Time" use="required" type="xs:integer"/>
    </xs:complexType>
  </xs:element>
  <xs:element name="sender" type="address"/>
  <xs:element name="receiver" type="address"/>
  <xs:element name="group">
    <xs:complexType>
      <xs:sequence>
        <xs:element ref="transaction"/>
      </xs:sequence>
    </xs:complexType>
  </xs:element>
  <xs:element name="transaction">
    <xs:complexType>
      <xs:sequence>
        <xs:element maxOccurs="unbounded" ref="segment"/>
        <xs:element ref="loop"/>
      </xs:sequence>
      <xs:attribute name="Agency" use="required" type="xs:NCName"/>
      <xs:attribute name="Association" use="required" type="xs:NCName"/
>
      <xs:attribute name="Control" use="required" type="xs:integer"/>
      <xs:attribute name="DocType" use="required" type="xs:NCName"/>
      <xs:attribute name="Name" use="required"/>
      <xs:attribute name="Release" use="required" type="xs:NMTOKEN"/>
      <xs:attribute name="Version" use="required" type="xs:NCName"/>
    </xs:complexType>
  </xs:element>
  <xs:element name="loop">
    <xs:complexType>
      <xs:sequence>
        <xs:element ref="segment"/>
      </xs:sequence>
      <xs:attribute name="Id" use="required" type="xs:NCName"/>
    </xs:complexType>
  </xs:element>
  <xs:complexType name="address">
    <xs:sequence>
      <xs:element ref="address"/>
    </xs:sequence>
  </xs:complexType>
  <xs:element name="address">
    <xs:complexType>
      <xs:attribute name="Id" use="required" type="xs:integer"/>
      <xs:attribute name="Qual" use="required" type="xs:integer"/>
    </xs:complexType>
  </xs:element>
  <xs:element name="segment">
    <xs:complexType>
      <xs:sequence>
        <xs:element maxOccurs="unbounded" ref="element"/>
      </xs:sequence>
      <xs:attribute name="Id" use="required" type="xs:NCName"/>
    </xs:complexType>
  </xs:element>
  <xs:element name="element">
    <xs:complexType mixed="true">
      <xs:sequence>
        <xs:element minOccurs="0" maxOccurs="unbounded"
ref="subelement"/>
      </xs:sequence>
      <xs:attribute name="Composite" type="xs:NCName"/>
      <xs:attribute name="Id" use="required" type="xs:NCName"/>
    </xs:complexType>
  </xs:element>
  <xs:element name="subelement">
    <xs:complexType>
      <xs:simpleContent>
        <xs:extension base="xs:integer">
          <xs:attribute name="Sequence" use="required"
type="xs:integer"/>
        </xs:extension>
      </xs:simpleContent>
    </xs:complexType>
  </xs:element>
</xs:schema>

I need to validate segment Id="DTM" where (Sequence="1")= 137 Or 138