CVoxImplantCrmHelper::completeActivity

static function completeActivity($activityId)
{
	if(!BitrixMainLoader::includeModule('crm'))
		return false;

	$activityId = (int)$activityId;
	if($activityId === 0)
		return false;

	$activityFields = CCrmActivity::GetByID($activityId, false);
	if(!$activityFields)
		return false;
	if($activityFields['COMPLETED'] == 'Y')
		return false;

	$updatedFields = array(
		'COMPLETED' => 'Y',
	);

	CCrmActivity::Update($activityFields['ID'], $updatedFields, false);
	return true;
}