ACF Image

@cwoody1980, i had a similar need to yours. Instead of using the plugin though, I used Gravity Form’s gform_after_submission hook.

Basically the code below grabs the file and post id from the submission, uploads the file to the media library, then updates the ACF field using ACF’s update_field function.

<?php
add_action('gform_after_submission', 'update_acf_file_from_gravity_form_with_attachment', 10, 2);
function update_acf_file_from_gravity_form_with_attachment($entry, $form) {

    // check if it's the correct form
    if ($form['id'] != 4) return;

    // Specify the ID of the file upload field
    $file_field_id = '21';
    $file_url = $entry[$file_field_id];
    // var_dump($entry);

    // Specify post ID field
    $post_id_field_id = '15';
    $post_id = $entry[$post_id_field_id];

    // Ensure a file URL and post ID are provided
    if (!empty($file_url) && !empty($post_id)) {
        // Proceed to upload the file to the WordPress Media Library
        $attachment_id = upload_file_to_media_library($file_url, $post_id);
        if ($attachment_id) {
            var_dump($attachment_id);
            var_dump($post_id);
            // Use the ACF update_field function to update the file field with the attachment ID
            $field_key = 'rental_pricing'; 
            update_field($field_key, $attachment_id, $post_id);
        }
    }
}

function upload_file_to_media_library($file_url, $post_id) {
    require_once(ABSPATH . 'wp-admin/includes/image.php');
    require_once(ABSPATH . 'wp-admin/includes/file.php');
    require_once(ABSPATH . 'wp-admin/includes/media.php');

    // Download file to temp location
    $tmp = download_url($file_url);

    // Check for download errors
    if (is_wp_error($tmp)) {
        // Handle error
        return false;
    }

    $file_array = array();
    // Set variables for storage
    // Extract filename and extension from the URL
    $file_array['name'] = basename($file_url);

    // Prepare an array for the attachment
    $file_array['tmp_name'] = $tmp;

    // Upload the file to the Media Library
    $id = media_handle_sideload($file_array, $post_id);

    // Check for handle sideload errors.
    if (is_wp_error($id)) {
        @unlink($file_array['tmp_name']); // Clean up
        return false;
    }

    return $id; // Return the attachment ID
}