I'd like to change a xfce4-power-manager setting (what to do when laptop lid is closed on AC) via the terminal so that I can assign a keyboard shortcut to do it.

Is there a way how to do it? Similar to dconf-editor set for gnome..
EDIT
ok, I found the file at ~/.config/xfce4/xfconf/xfce-perchannel-xml/xfce4-power-manager.xml. But changing it doesn't do anything. How do I reload xfce4-power-manager? I tried xfce4-power-manager --restart but that doesn't help.