JSONGenerator Array of Objects

I cannot seem to generate an array of named objects using JSONGenerator.

If I use the following code:

Jsongenerator jga
Long ll_child
Long ll_jsonarray
long ll_handle
long ll_root
String ls_json1

jga = create JSONGenerator
ll_root = jga.CreateJsonObject()
ll_jsonarray = jga.AddItemArray(ll_root, "packages")
ll_child = jga.AddItemobject(ll_jsonarray)
ll_handle = jga.AddItemNumber(ll_child,"value", 4.5)
ll_handle =jga.AddItemString(ll_child,"unit", "pound")
ll_child = jga.AddItemobject(ll_jsonarray)
ll_handle = jga.AddItemNumber(ll_child,"value", 6.8)
ll_handle =jga.AddItemString(ll_child,"unit", "pound")
ls_json1 = jga.getjsonstring( )

I get these results:

{
"packages":
[
{"value":4.5,"unit":"pound"},
{"value":6.8,"unit":"pound"}
]
}

Which is close to what I need but what I really want is:

{
"packages":
[
{ "weight": {"value":4.5,"unit":"pound"} },
{ "weight": {"value":6.8,"unit":"pound"} }
]
}

So it seemed logical to change my AddItemObject statement from

ll_child = jga.AddItemobject(ll_jsonarray)

to this:

ll_child = jga.AddItemobject(ll_jsonarray, "weight")

but when I do that I get:

{"packages":[]}

Is there a way to get the generator to create more complex json or is it just a bit too primitive a tool to get the output I need?

Jsongenerator jga Long ll_child Long ll_jsonarray long ll_handle long ll_root String ls_json1 jga = create JSONGenerator ll_root = jga.CreateJsonObject() ll_jsonarray = jga.AddItemArray(ll_root, "packages") ll_child = jga.AddItemobject(ll_jsonarray) ll_child = jga.AddItemobject(ll_child,"weight") ll_handle = jga.AddItemNumber(ll_child,"value", 4.5) ll_handle =jga.AddItemString(ll_child,"unit", "pound") ll_child = jga.AddItemobject(ll_jsonarray) ll_child = jga.AddItemobject(ll_child,"weight") ll_handle = jga.AddItemNumber(ll_child,"value", 6.8) ll_handle =jga.AddItemString(ll_child,"unit", "pound") ls_json1 = jga.getjsonstring( )

Resolved JSONGenerator Array of Objects