Well, I found several links and maybe there's something there

https://social.msdn.microsoft.com/Fo...ommunicatorsdk
https://stackoverflow.com/questions/...c-2013-for-vba
https://stackoverflow.com/questions/...mmunicator-api
https://www.reddit.com/r/excel/comme...ny_experience/
https://vbaninja.wordpress.com/excel...-communicator/