[visualization-api] addListener Event Not Firing for Annotated TimeLine?

[MaxPower]

Hi all!

Here's some code I've written to create an Annotated TimeLine chart:

function drawATrend(arrADate, arrComp, arrA1, arrA2, arrA3, arALength)
{
        var Achart = new
google.visualization.AnnotatedTimeLine(document.getElementById('Atrend'));
        var Adata = new google.visualization.DataTable();
        var aADate = new VBArray(arrADate);
        var aComp = new VBArray(arrComp)
        var aA1 = new VBArray(arrA1);
        var aA2 = new VBArray(arrA2);
        var aA3 = new VBArray(arrA3);

        var vbADate = aADate.toArray();
        var vbComp = aComp.toArray();
        var vbA1 = aA1.toArray();
        var vbA2 = aA2.toArray();
        var vbA3 = aA3.toArray();

        Adata.addColumn('date', 'Date');
        Adata.addColumn('number', 'Missing');
        Adata.addColumn('number', 'P/N');
        Adata.addColumn('number', 'QTY');
        Adata.addColumn('number', 'MOD');

        for (j=0;j<=arALength;j++){
                Adata.addRows([
                        [new Date(vbADate[j]), vbComp[j], vbA1[j], vbA2[j],
vbA3[j]]
                ]);
        }

        chartAOptions = {
                displayAnnotations: true,
                thickness: 4,
                fill: 0,
                legendPosition: 'newRow',
                wmode: 'transparent',
                scaleType: 'maximized'
        };


        Achart.draw(Adata, chartAOptions);
        google.visualization.events.addListener(Achart, 'rangeChange',
updateDefTab);

      }

And a test handler function:

function updateDefTab(){

                alert('The trend range is ' + 
Achart.getVisibleChartRange().start +
' to ' + Achart.getVisibleChartRange().end);
        }

Thing is, when the user changes the zoom range on the timeline chart,
the event isn't thrown (or at least, the alert isn't fired).

Any ideas?

Thanks!
Max

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