[flexcoders] Dynamically sized array collection

[RadicalByte]

Hi All,

I'm hitting my head against a brick wall trying to work this out, but
to no avail.

I would like to have an ArrayCollection which contains a variable
number of ArrayCollections.

My code looks like..

[CODE]

var arrayCollection:ArrayCollection=new ArrayCollection();
var numberOfItems:int=10;

for(var x=1;x<numberOfItems;x++)
{
  arrayCollection.addItem(new ArrayCollection());
}

[/CODE]

arrayCollection[0] will contain an array of strings
arrayCollection[x] will contain an array of numbers

Structure wise it's like a spreadsheet, where the first column
contains a title and the other columns numbers.

This collection will be mapped to a DataGrid and an BarChart - with
the x-axis mapped to the array-of-strings and each series mapped to
the numbers (this'll be dynamic, too).

My aim with the collection is to use it to hold SUM values from a
tree-structured XML transmission.  The XML transmission has a fixed
debth but the number of properties may different.  In my example
below, I have "Hours" and "Cost" to SUM but in other XML transmissions
I'll have "Hours", "Cost", "Profit", etc etc.

[XML]

<Weeks>
        <Week id="0" name="2007-01">
                <Tarif Name="A" Hours="100" Cost="50.00"/>
                <Tarif Name="B" Hours="100" Cost="50.00"/>
                <Tarif Name="C" Hours="100" Cost="50.00"/>
        </Week>
        <Week id="1" name="2007-02">
                <Tarif Name="A" Hours="100" Cost="50.00"/>
                <Tarif Name="C" Hours="100" Cost="50.00"/>
        </Week>
</Weeks>

[/XML]

So, can anyone explain to me what I'm doing wrong?

Cheers,
Ryan