if (ds_map_find_value(event_data, "event_type") == "sprite event")
{
    switch ds_map_find_value(event_data, "message")
    {
        case "trapdoor_spawn_particles":
            instance_create_depth((x + 24), (y + 17), (depth - 1), obj_mansion_trapdoor_particles)
            break
    }

}