var rows = AdWordsApp.report(
'SELECT MultiAssetResponsiveDisplayAdMarketingImages' +
+ ' FROM AD_PERFORMANCE_REPORT'
+ ' DURING ' + PERIOD_FROM + ', ' + PERIOD_TO, {
apiVersion: API_VERSION
}
).rows();
while(rows.hasNext()) {
var row = rows.next();
var res = JSON.parse(row['MultiAssetResponsiveDisplayAdMarketingImages']);
}
// res : [{assetId=7.705862799E9, assetPerformanceLabel=--, assetApprovalStatus=APPROVED}]