function CronDeleteSchedule()
{
    $tpl = new templates();
    $FieldName = $_GET["FieldName"];
    $index = $_GET["index"];
    $taskName = $_GET["CronDeleteSchedule"];
    $task = new cron();
    $arrayTask = $task->GetTaskDatas($taskName);
    $data_time = $arrayTask["DATAS"][$FieldName];
    $array_time = explode(',', $data_time);
    writelogs("Delete {$taskName}=>{$FieldName}  index={$index} value={$array_time[$index]}", __FUNCTION__, __FILE__);
    unset($array_time[$index]);
    //prevent double data :
    while (list($index, $value) = each($array_time)) {
        $newArray[$value] = $value;
    }
    //sort the values
    if (is_array($newArray)) {
        ksort($newArray);
    }
    if (count($newArray) > 0) {
        $newline = implode(",", $newArray);
    } else {
        $newline = "*";
    }
    $arrayTask["DATAS"][$FieldName] = $newline;
    $command = $task->ImplodeCronCommand($arrayTask);
    $task->SaveTaskCommandLine($command, $taskName);
}