How to get nested element from mongodb golang [duplicate] - mongodb

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I recently started studying Golang and I have a problem now, I can't find any information or documentetion about it :( Please, I need your help! I have some structure in mongodb:
"id": 123,
"attributes.store.name": TestStore
I need to get these values (id, name), I use this code:
...
opt := options.Find().SetProjection(bson.M{
"_id": 0,
"id": 1,
"attributes.store.name": 1})
opt.SetLimit(1) //1 just for test, I need to get 100000
var curr *mongo.Cursor
curr, err = visits.Find(context.Background(), filter, opt)
if err != nil {
log.Fatal(err)
}
var results []bson.M
if err = curr.All(context.Background(), &results); err != nil {
log.Fatal(err)
}
for _, result := range results {
fmt.Println(result)
}
But in this way I get:
[map[attributes:map[store:map[name:TestStore]] id:123]]
So I can't understand how I can get exactly "name", because I can use result["attributes"], but I can't get result["attributes"]["store"]["name"] because the result["attributes"] has a "primitive.M" type.
Is there maybe a way to "avoid" keys "attributes.store" in "attributes.store.name": 1?
Or how it possible to get the "name"?
And please give me a documentatial link about it, beacuse unfortunately I couldn't find anytithg about this case.
///////////////////////////////////////////////////////
I have tried this:
opt := options.Find().SetProjection(bson.M{
"_id": 0,
"id": 1,
"attributes.store.name": 1})
I expected to see:
[map[name:TestStore] id:123]]
I've got:
[map[attributes:map[store:map[name:TestStore]] id:123]]
This way I can't get the value under the key "name"