Из списка ставить лидов/сделок несколько задач, а не одну

AddEventHandler('tasks', "OnBeforeTaskAdd", "MultiTaskAdd");
function MultiTaskAdd(&$arFields){        
        if(\COption::GetOptionString("main",'MULTITASK_IS_ENABLED','') == 'checked'){          

            $stopExp = 0;
            $checkFiestDeal = 9999;
            $findStr = "";
            

            /* //битрикс обновился, не работает условие
            if($_REQUEST['back_url']) {
                if (strpos($_REQUEST['back_url'], 'deal')) {
                    $findStr = 'D_';
                } else if (strpos($_REQUEST['back_url'], 'lead')) {
                    $findStr = 'L_';
                }
            }*/
            //замена
            if(($_REQUEST["IFRAME"]=="Y") && ($_REQUEST['TITLE']=="CRM: ") && !empty($_REQUEST['UF_CRM_TASK'])){
                if(strpos($_REQUEST['UF_CRM_TASK'],"D_")!==false){
                    $findStr = 'D_';
                }
                elseif(strpos($_REQUEST['UF_CRM_TASK'],"L_")!==false){
                    $findStr = 'L_';
                }
            }
            if(is_countable($arFields['UF_CRM_TASK']) && count($arFields['UF_CRM_TASK'])>1 and $findStr){
                foreach ($arFields['UF_CRM_TASK'] as $key => $taskCrmBinding){
                    if(stripos($taskCrmBinding, $findStr) === 0 and $checkFiestDeal==9999){
                        $checkFiestDeal=$key;
                        $unsetKeys[$key]=$key;
                    }
                    elseif(stripos($taskCrmBinding, $findStr) === 0){
                        $newArfield=$arFields;
                        unset($newArfield['GUID']);
                        $newArfield['key']=$key;
                        $newTaskCompitableArrays[]=$newArfield;
                        $unsetKeys[$key]=$key;
                    }
                }
                foreach ($unsetKeys as $key){
                    if($key != $checkFiestDeal){
                        unset($arFields['UF_CRM_TASK'][$key]);
                    }
                }

                $obTask = new \CTasks;
                foreach ($newTaskCompitableArrays as $key => $compitableArray){
                    foreach ($unsetKeys as $unKey){
                        if($unKey !== $compitableArray['key']){
                            unset($compitableArray['UF_CRM_TASK'][$unKey]);
                            unset($newTaskCompitableArrays[$key]['UF_CRM_TASK'][$unKey]);
                        }
                    }
                    unset($compitableArray['key']);
                    $obTask->Add($compitableArray);
                }
            }
        }
    }