[flexcoders] how to make a datatip stay on the chart?

[Ofir Shemesh]

hello,
i m programmatically showing a datatip on a LineSeries.
but how do i make it stay?
for now it is disappearing when moving the mouse over the chart.
i want it to stay there until i tell it to go off.
how?

this is my code:

<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml";>

    <mx:Script>
        <![CDATA[
                import mx.events.ItemClickEvent;
                import mx.charts.ChartItem;
                import mx.charts.series.items.LineSeriesItem;

        import mx.collections.ArrayCollection;

        [Bindable]
        private var expensesAC:ArrayCollection = new ArrayCollection( [
            { Month: "Jan", Profit: 200 },
            { Month: "Feb", Profit: 100 },
            { Month: "Mar", Profit: 150 },
            { Month: "Apr", Profit: 180 },
            { Month: "May", Profit: 240 } ]);
            
            private function onItemClick(event:ItemClickEvent):void {
                var item:LineSeriesItem = ser1.items[event.index];
                var e:MouseEvent = new MouseEvent(MouseEvent.MOUSE_MOVE,
true, false,
                                                                                
        item.x + chart.computedGutters.left, item.y +
chart.computedGutters.top);
                chart.dispatchEvent(e);
            }
        ]]>
    </mx:Script>

    <mx:Panel height="100%" width="100%" layout="horizontal">

        <mx:LineChart id="chart" height="100%" width="100%"
            paddingLeft="5" paddingRight="5"
            showDataTips="true" dataProvider="{expensesAC}">
             
             <mx:verticalAxisRenderers>
                <mx:AxisRenderer axis="{verticalAxis}"
id="renderer_verticalAxis" />
             </mx:verticalAxisRenderers>   
            <mx:verticalAxis>
                <mx:LinearAxis id="verticalAxis" />
            </mx:verticalAxis>
            
            <mx:horizontalAxis>
                <mx:CategoryAxis categoryField="Month"/>
            </mx:horizontalAxis>

            <mx:series>
                <mx:LineSeries yField="Profit" id="ser1" />
            </mx:series>
        </mx:LineChart>
                <mx:ControlBar>
                        <mx:LinkBar dataProvider="{expensesAC}" 
labelField="Month"
itemClick="onItemClick(event)" />
                </mx:ControlBar>
    </mx:Panel>
</mx:Application>