<?xml version="1.0" ?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
  <xs:complexType name="pets">
    <xs:attribute name="amount" fixed="4">
      <xs:simpleType>
        <xs:restriction base="xs:integer">
          <xs:maxInclusive value="8" />
        </xs:restriction>
      </xs:simpleType>
    </xs:attribute>
  </xs:complexType>
</xs:schema>