onDelete.js

import("system.neon");
import("system.calendars");
import("system.vars");


if (vars.exists("$param.Entry_param"))
{
    var entry = JSON.parse(vars.getString("$param.Entry_param"));
    var reccurenceid = entry[calendars.RECURRENCEID];
    if (reccurenceid == undefined) reccurenceid = null;
    calendars.removeEntryByUID(calendars.VEVENT, vars.get("$sys.user"), entry[calendars.ID], reccurenceid)
}