source/php/Admin/Options.php
public function saveDrawPoints()
    {
        if (!isset($_POST['coordinates']) && !empty($_POST['coordinates'])) {
            wp_send_json_error("Missing coordinates");
        }

        $points = $_POST['coordinates'];
        // Convert coordinates to float
        foreach ($points as &$point) {
            $point = array_map('floatval', $point);
        }
        update_option('event_import_area', $points);
        wp_send_json_success($points);
    }
public function saveDrawPoints()
    {
        if (!isset($_POST['coordinates']) && !empty($_POST['coordinates'])) {
            wp_send_json_error("Missing coordinates");
        }

        $points = $_POST['coordinates'];
        // Convert coordinates to float
        foreach ($points as &$point) {
            $point = array_map('floatval', $point);
        }
        update_option('event_import_area', $points);
        wp_send_json_success($points);
    }
Save area coordinates as option