IMDB ID

Hello,

How can i get IMDB ID from video?

I try xbmc.getInfoLabel("VideoPlayer.IMDBNumber") xbmc.getInfoLabel("ListItem.IMDBNumber"), not working.

ListItem.setProperty('IMDBNumber', 'tt1234567')
I am pushing to ListItem the IMDBNumber on video addon and still i can't find it on subtitle addon.

What i am doing wrong?