Token       = "ya29.a0AcM612xw6IRwwkQIOEhizd2pJ6LLI4UAhdhxmXDGEzYkcfUPrLYgDDwbsSi5iQdc78WPs_1_Qor5KipuV6mAIvr6z-AKzrBaMT4erIR5T...";
    Calendar    = "e8a267e4a6629e0ef3f8a08ca54f52e2b031d3c40bd27d2866c2ed083c6353ec@group.calendar.google.com";
    Event       = "ro3gv4dokajnh90pcn58lel8e4";
    Description = "New event description";

    EventDescription = New Map;
    EventDescription.Insert("Description", Description);

    Result = OPI_GoogleCalendar.EditEvent(Token, Calendar, EventDescription, Event);