luos/workflow/engine/methods/install/heartbeatStatus.php

<?php

try {
    if (isset($_REQUEST['status'])) {
        $oServerConf = ServerConf::getSingleton();
        /*you can use SYS_TEMP or SYS_SYS ON HEAR_BEAT_CONF to save for each workspace*/
        if ($_REQUEST['status']) {
            echo "ACTIVE (Thanks!)";
            $oServerConf->setHeartbeatProperty('HB_OPTION', 1, 'HEART_BEAT_CONF');
            $oServerConf->unsetHeartbeatProperty('HB_NEXT_BEAT_DATE', 'HEART_BEAT_CONF');
        } else {
            echo "INACTIVE";
            $oServerConf->setHeartbeatProperty('HB_OPTION', 0, 'HEART_BEAT_CONF');
            $oServerConf->unsetHeartbeatProperty('HB_NEXT_BEAT_DATE', 'HEART_BEAT_CONF');
        }
    } else {
        echo "Nothing to do";
    }
} catch (Exception $e) {
    $token = strtotime("now");
    PMException::registerErrorLog($e, $token);
    G::outRes(G::LoadTranslation("ID_EXCEPTION_LOG_INTERFAZ", array($token)));
}