You didn't follow a single Step of what the guide that explains
how to quickly add many broadcasting hotkeys, you modified an example and the reason it doesn't work is that it probably doesn't have a Hotkey configured.
Instead of
linking this to you again, I am just going to paste it right here in this post. Follow it from step 1, to the end. Line by line. Takes 30 seconds, really seriously just follow the numbers one at a time and when you are done, your key will work:
1. In the top pane, click on "Combat" under Key Maps
2. In the bottom left pane, where it now shows "Combat" and then "Mapped Keys", right click on Mapped Keys and select Many new Mapped Keys.
3. At the top of the Many new Mapped Keys window is a box labeled "Press a key combination here". Click in that box, and press each and every combination of keys you want to set up right now, which may include any combination of alt,ctrl,shift with whichever non-modifier key you like.
4. The "Target for keystrokes" box lets you pick the intended target windows for the keystroke to be passed to. Typically this would be "Window:All w/ current" which will pass the keystroke to every window including the one you are in. Likewise, "Window: All w/o current" will pass the keystroke to every window excluding the one you are in (aka "all other").
5. The "Do this Mapped Key first" box lets you pick a Mapped Key to perform before the keystroke is passed. Usually you want to just leave it empty, but this would typically be used for things like automatically assisting your main character before an attack.
6. The "Do this Mapped Key after" box lets you pick a Mapped Key to perform after the keystroke is passed. Usually you want to just leave it empty.
7. Click OK!
then Export to Inner Space.
If that was too much to read, try this abridged version that ONLY tells you how to add the 1 key, and this is JUST FOR YOU.
1. In the top pane, click on "Combat" under Key Maps
2. In the bottom left pane, where it now shows "Combat" and then "Mapped Keys", right click on Mapped Keys and select Many new Mapped Keys.
3. In the window that comes up, there's a box "
Press a key combination here". Click on that box and then press 1.
4. Click OK!
5. Export to Inner Space