Customizing Workspace Navigation Shortcuts Using Gsettings

I got a problem in my Ubuntu 12.04 LTS, since the configuration that I saved using the gnome-setting interface did not worked (as if it was never saved).

So I decided to google around and found this tips which I already customized to my enviroment:

gsettings set org.gnome.desktop.wm.keybindings     switch-to-workspace-1 "[\"Q\"]"
gsettings set org.gnome.desktop.wm.keybindings     switch-to-workspace-2 "[\"W\"]"
gsettings set org.gnome.desktop.wm.keybindings     switch-to-workspace-3 "[\"E\"]"
gsettings set org.gnome.desktop.wm.keybindings     switch-to-workspace-4 "[\"R\"]"

Here, I used Alt with for workspace 1-4