How do you disable an object's map nugget (aka minimap icon) once it has been used?

You know how monster totems show up on the minimap, but once you use the totem, the icon dissapears?

I managed to make chests show up on the minimap using actor variables-> map nugget, but their minimap icon still remains once i open the chest. How do i disable the icon (aka map nugget) once the chest has been used, similar to how totems work?

I dont see anything in the monster totem records that will disable the nugget once it has been used, so i am confused how it works…