How do I define (XML Schema) a list of elements with names based on the values of an enumeration?

Question

I'm looking to do something like this:

<?xml version="1.0" encoding="utf-8"?>
<!-- edited with XMLSPY v5 rel. 3 U (http://www.xmlspy.com) by Systems Management (Caleb Technologies Corp) -->
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"&gt;
    <xs:element name="Config" type="Config"/>
    <xs:simpleType name="FeatureNames">
        <xs:restriction base="xs:string">
            <xs:enumeration value="Feature1"/>
            <xs:enumeration value="Feature2"/>
            <xs:enumeration value="Feature3"/>
        </xs:restriction>
    </xs:simpleType>
    <xs:complexType name="UIConfigOptions">
        <xs:choice minOccurs="0" maxOccurs="unbounded">
            <xs:element name="**FeatureNames**" type="xs:boolean"/>
        </xs:choice>
    </xs:complexType>
    <xs:complexType name="Config">
        <xs:all minOccurs="0">
            <xs:element name="UIConfigOptions" type="UIConfigOptions"/>
        </xs:all>
    </xs:complexType>
</xs:schema>

Where the **FeatureNames** element contained in UIConfigOptions is replaced by some dynamic mapping which automatically expands the elements of the choice container to the whatever the contents of the FeatureNames enumeration is.