Strange shutdown / power off issue

Hi,

I use my Harmony Remote to sleep XBMC when it issues the 'power toggle' command. I want to change this to Hibernate instead of sleep so I thought I'd change the Shutdown Function option to Hibernate and leave the Shutdown Function Timer set to Off.

This however does not work, when I issue the Power Toggle command from my Harmony it still puts the PC to Sleep not Hibernate. If I go back and change the Shutdown Function Timer to 5 mins it does Hibernate the PC after 5 mins but I don't want this I would like to do it immediately on Power Toggle.

Any ideas?

Thanks