mpColumnsInput = document.getElementById('stampColumnsInput');
    var doInitialSnapshotInput = document.getElementById('doInitialSnapshotInput');

    function connected() {
        c.addEventListener(Client.EVENT_CONFIG_REMOVED, event => {
            removeQuery(event.detail);
        });
        c.addEventListener(Client.EVENT_CONFIG_UPDATED, event => {
            removeQuery(event.detail);
            addQuery(event.detail);
        });
        c.addEventListener(Client.EVENT_CONFIG_ADDED, event => {
