Wordpress: Gravity Forms List to ACF Repeater post save

gistfile1.php

<?php

add_action('gform_after_submission', 'gfToAcfListToRepeater', 10, 2);
function gfToAcfListToRepeater($entry, $form)
{
    foreach ($form['fields'] as $field) {
        if (!($field['type'] == 'post_custom_field' && $field['inputType'] == 'list' && $field['enableColumns'] == true)) {
            continue;
        }
        $id = $field['id'];
        $postId = $entry['post_id'];
        $acfFields = unserialize($entry[$id]);
        $fieldName = $field['postCustomFieldName'];
        $count = 0;

        foreach ($acfFields as $item) {
            foreach ($item as $key => $value) {
                $acfKey = str_replace(' ', '_', strtolower($key));
                $acfFieldName = $fieldName . '_' . $count . '_' . $acfKey;
                update_post_meta($postId, $acfFieldName, $value);
            }
            $count++;
        };
        update_post_meta($postId, $fieldName, count($acfFields));
    }
}