[mongodb-user] left-hand side error

[mongoDB newbie]

Im trying to update a certain part in my database and used this
commands

> var t = db.licpoll.findOne({},{"children.OpeniT.children.license-file.type":true})
> t
{
"_id" : ObjectId("4bd68a6a1205000000000514"),
"children" : {
"OpeniT" : {
"children" : {
"license-file" : {
"type" : "FileName"
}
}
}
}
}
>
>
>
> t.children.OpeniT.children.license-file.type = "sssss";
Wed Apr 28 12:20:49 JS Error: SyntaxError: invalid assignment left-
hand side (shell):0 ---> and i get this error

Im just wondering if there's anything wrong with my syntax. coz as far
as i know its correct
Hope someone help me here..thanks

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[Dwight Merriman]

probably the dash which is an operator in javascript, which is what
you are doing here. try:

t.children.OpeniT.children["license-file"].type = "sssss";

or an update() server-side operation with

{ $set : "t.children.OpeniT.children["license-file"].type" : "sssss" }

as a parm

[mongoDB newbie]

It worked..however the other entries in the object has been removed.

> db.mydb.findOne()

{
"_id" : ObjectId("4bd68a6a1205000000000514"),
"children" : {
"OpeniT" : {
"children" : {
"license-file" : {

"type" : "sssss",
"name" : "license-file",
"value" : "None"
}
}
}
}
}

it did the update and renamed the "type" : "FileName" to "sssss"
But it deleted the other entries in the object.
FYI:
I am using a tree structure

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