I want to create a new keyboard shortcut. I want the shortcut Ctrl+Backspace to perform the same operation as if I pressed Ctrl+Home. The reason is because my new keyboard does not have a home button, and yet I find Ctrl+Home so useful. I went to Ubuntu 12.04 Keyboard pop up window, clicked on Custom Shortcuts at the bottom left. Then I pressed the plus sign to add a new rule. It asked my for a name and for a command. For the name I wrote 'my special ctrlhome'. For the command, I pressed down Ctrl+Backspace, but that didn't do anything.
How do I map Ctrl+Backspace to the same key combo as Ctrl+Home?