What I am doing wrong?!?

[SzykCech4]

Hello
In first place sorry if it is wrong place to ask for support. But I don't find any links to groups nor mainling list nor forum.

I write unit test form my Settings class (Json based). I have generated Json file (by my Settings class) and I want manually check if it contains all data I wrote.
File is like this:

{"Main":{"DoubleVariable":121312.340012,"IntVariable":-13300,"LLVariable":-100000013200,"ListVariable":["Dana1","Dana2","Dana3","Dana4","Dana i więcej!"],"UIntVariable":13300,"ULLVariable":100000013200,"WStringVariable":[68,97,110,101,32,105,32,119,105,281,99,101,106,33,32,105,32,119,105,281,99,101,106,32,100,97,110,121,99,104,33]}}

As you can see I try to save few types I suppose to use with my Settings class. And as you can see this Json looks good. But I must verify this by my code.
My code is:

    std::vector<unsigned char> lData(eki::gLoadRawFile(s.fileName()));
    json lJson;
    auto lArray(lJson.parse(lData.data()));
    for(auto i(lArray.begin()); lResult && (i != lArray.end()); ++i)
    {
        (*i)["Main"]["IntVariable"].get_to(lInt2);
        if(lInt2 != lInt)
        {
            lResult = false;
            break;
        }
    [...]
    }

Problem is in line:

        (*i)["Main"]["IntVariable"].get_to(lInt2);

I explain this line:

(*i) : Dereference object under iterator I use in order to parse Json.
["Main"]["IntVariable"] : Access to the Main object and IntVariable in it.
.get_to(lInt2) : Store value to int lInt2; variable.
But in this line I got exception:
[json.exception.type_error.302] type must be number, but is null

Please explain to me: What I am doing wrong?
Thanks in advance and Best regards.

[pboettch]

If the contents of the file is an object (something between braces { .. }) it cannot be used as an array.

What is the output of *i inside the loop? (std::cerr << *i << "\n";)