How to show and hide osmbuildings objects

[rollinstar]

Hi,
Thank you for providing a wonderful project like this!
I'm developing a map using OSMBuildings, leaflet, and geojson.
But, I faced a problem.
My client want that OSMBuildings be toggled (on and off buildings) when they would like to see base maps.
Firstly, I used a function(onRemove()) for clearing a OSMBuilding objects and removed OSMBuildings objects.
Then, when I called a function(set()) for loading objects again, it did not operate.
So, I declared a new OSMBuildings object again, and I could render the OSMBuildings objects.
However, z-index of the OSMBuilding's instance changed to last z-index of leaflet map.
How can I toggle the OSMBuilding's objects which is already rendered without changing z-index?
Can you help me to solve this problem?

• Actually, my English skill is not good so some sentences may be grammatically wrong. If you cannot understand my question, leave a comment please.

[kekscom]

Could you try to use Leaflets layer control?

var layers = {
    "buildings": osmb
};
L.control.layers(layers).addTo(map);

It should also allow to remove layers.
See: http://leafletjs.com/examples/layers-control/

[rollinstar]

Thank you for your advice!
But this way still cannot solve problem that z-index of each layer is changed when layers are toggled.
My client want that particular layer is shown upper than OSMBuildings objects.
However, I think that this problem should be solved by leaflet, so I will try to find a way using leaflet library myself.
Thank you!