Guys, I am replicating Chandoo's dynamic chart with check boxes and have a question. With his chart, it is fairly simple to overlay 3 different series when the values are within the same range. However, My chart would have Sales up to $100,000 and I want to overlay a line graph using percentages (usually between 15%-25%). My question would be... can I create this overlay with the sales $ axis on the left and the % axis on the right?