How to set the property value of the elements of a particular section?

Question

1C-Bitrix

How to set the property value of the elements of a particular section?
There is an option how to set a specific element in IB.
$elementId =33;
$iblockId = 2;
\CIBlockElement::SetPropertyValuesEx($elementId, $iblockId, ['Seasons' => 'summer']);

but how to set all the elements of a certain section until the complexity
Tell me please, what are the options?

Answer 1

1) Select the required elements of the infoblock
2) Loop through them and change the values