I wish to do a Smart Action that will leave the screen ON when I am attached to USB power and have the earphones plugged in. I set up the triggers OK but the screen options have a max of 10 minutes on. I know in the setting mode you can set the screen to stay ON indefinitely. Any suggestions or apps that could solve this??

The car dock is not an option since I have a heavy duty motorcycle mount to keep the Razr tightly locked into the mount.