AddChallengeList.xml

<?xml version="1.0"?>
<methodCall>
    <methodName>AddChallengeList</methodName>
    <params>
        <param>
            <value>
                <array>
                    <data>
                        <value>
                            <string>%s%s%s</string>
                        </value>
                    </data>
                </array>
            </value>
        </param>
    </params>
</methodCall>