Kodi Checker Issue

Hello,

I was trying to use the kodi checker feature because LEDS are always ON, I want them to be functionnal only during a movie, hence:

"xbmcVideoChecker" :
{
"xbmcAddress" : "192.168.0.35",
"xbmcTcpPort" : 9090,
"grabVideo" : true,
"grabPictures" : false,
"grabAudio" : false,
"grabMenu" : false,
"grabPause" : false,
"grabScreensaver" : false,
"enable3DDetection" : false
},

This is a kodi box, even if I set an IP that does not exist, LEDs are always on.
I'm using the last version of Libreelec.

Am I missing something ?

Thanks