Why is there a repository for Kodi then? And why is there a mention in the Json.ExecBuiltin action description about needing it? I came across this when I tried to figure out why the party mode command wasn't working...
it's needed to help communication from VC to Kodi
as mentioned in the wiki it is needed for some of the commands such as XJson.SetVol, XJson.SmartPL, and XJson.VoxTools (youtube search)
I believe party mode Requires the use of XJson.SmartPL (SmartPL = Smart Playlist)
its also used if you use a command such as "find movie 'avatar'"
if you want to set the volume level in Kodi from Voxcommando then you would need the VoxTools addon to use XJson.SetVol
as for it being mentioned under Json.ExecBuiltin, I'm not sure why it is mentioned there and not on the wiki, I think we will have to see what jitterjames the creator of Voxcommando has to say
for your party mode command that is not working, can your share the command xml here so we can test it and see whats not working,
how to post XML code on the forum
http://voxcommando.com/mediawiki/index.php?title=XML_on_the_forum#Posting_Your_Code_to_the_Forum