Hi.
Don't use enum "LuaEventsId" it is obsolete, use string like that:
EventsLua.AttachEventLua("LFG_PROPOSAL_SHOW", m => Lua.LuaDoString("AcceptProposal();"));
You can dump all events and check event called when you get this popup, run this code one time when product is started:
wManager.Wow.Helpers.EventsLuaWithArgs.OnEventsLuaStringWithArgs += (eventid, args) =>
{
Logging.WriteDebug("[EVENT] " + eventid);
};