need to register for the dollies moved event and update my hidden entities at the time.
Event table returned with the event
player_index = player_index, --The index of the player who moved the entity
moved_entity = entity, --The entity that was moved
start_pos = position --The position that the entity was moved from
}
--In your mods on_load and on_init, create an event handler for the dolly_moved_entity_id
--Adding the event registration in on_load and on_init you should not have to add picker as an optional dependency
if remote.interfaces["picker"] and remote.interfaces["picker"]["dolly_moved_entity_id"] then
script.on_event(remote.call("picker", "dolly_moved_entity_id"), function_to_update_positions)
end