Please note that the function meetinghostchangecb return an integer not a list !
https://github.com/zoom/zoom-sdk-electron/blob/11e721e1cebcdb4c40b7d895e31b32a533edd883/demo/main.js line:133
[main.js]
function meetinghostchangecb(**userList**) {
}
but in the [lib\zoom_meeting_Participants_ctrl.js:34] the parameter stil userId
function meetinghostchangecb(userId) {
if (_meetinghostchangecb) {
_meetinghostchangecb(userId)
}
}