I’m trying to add a new keybinding to the rc.xml of my Openbox WM. The code is as follows:

<keybind key="Print">
  <action name="Execute">
    <command>scrot -s - | xclip -selection clipboard -target image/png</command>
  </action>
</keybind>

But nothing happens. Alternatively, if I put something like:

scrot '/tmp/%F_%T_$wx$h.png' -e 'xclip -selection clipboard -target image/png -i $f'

…Everything works just fine. What am I doing wrong?