If there's no AMP option in the commands list, you should also be able to make your remote "learn" the code. When you're on the custom buttons screen of the harmony software, there should be a button near the bottom that says "Learn Code" or something to that effect. From that point, it should prompt you for a name for the button, tell you how to place your remotes (with my Harmony One, I point the old remote at the back of my Harmony), and when to press the buttons. Give it a few seconds and it will have learned the code, which you can then assign appropriately :)