<?xml version=“1.0”?> <xs:schema xmlns:xs=“www.w3.org/2001/XMLSchema”>

<xs:element name="test">
    <xs:complexType>
        <xs:attribute name="test1" type="myType"/>
        <xs:attribute name="test2" type="myType"/>
        <xs:attribute name="test3" type="myType"/>
        <xs:attribute name="test4" type="myType"/>
        <xs:attribute name="test5" type="myType"/>
    </xs:complexType>
</xs:element>

<xs:simpleType name="myType">
    <xs:restriction base="xs:string">
        <xs:pattern value="[56;&amp;#]"/>
    </xs:restriction>
</xs:simpleType>

</xs:schema>