Unable to launch libreoffice impress external player

Hi,
I’d just bought an old eeetop touchscreen PC already installed with Kodi. Cool
I’d like to play .odp files.
Linux: Ubuntu 14.04.5 LTS
Kodi: 2:17.0~git20160501.1247-alpha1-0trusty i386

I created a new player here:
.kodi/userdata/playercorefactory.xml: http://paste.ubuntu.com/23980906/

But nothing runs when choosing a .odp file in file manager.
Debug log: http://paste.ubuntu.com/23980859/

I guess a problem with playercorefactory.xml with message “WARNING: CPlayerCoreFactory::GetPlayer(libreoffice): no such player: libreoffice” but I expect my .xml to be correct…

Help welcome!!! Tongue