How to count the number of elements in an array,properties file with multiple selection?

Question

1C-Bitrix

There is an infoblock, I created a file property there, with multiple selection, this is necessary to add additional pictures for the gallery, and so you need to calculate how many pictures this array stores
<?echo $result = count("more_picture") ?>
shows that 0 why?

Answer 1

I thought wrong, right like this

<?echo $result = count($arResult["PROPERTIES"]["more_picture"]["VALUE"]) ?>