How to pass a value in a line chart in flex, from a database where I'm using java to pass the value - flex4

Question

I am using trend lines from amcharts.
I am using java and passing the values from database uins blazeds [??].
I'm taking an array collection to fetch the values from the database and put it in trendlines.
So what's the error in the code and what should the correct code be?
<?xml version="1.0" encoding="utf-8"?>
<!-- This example is made using amStock Flex component. Visit http://flex.amcharts.com to see more examples -->
<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark"
xmlns:mx="library://ns.adobe.com/flex/mx"
xmlns:amcharts="http://www.amcharts.com/com_internal"
backgroundColor="#FFFFFF"
width="100%" height="100%"
creationComplete="init()"
viewSourceURL="srcview/index.html">
<fx:Declarations>
<!-- Place non-visual elements (e.g., services, value objects) here -->
<mx:Producer id="producer" destination="RandomDataPush1"
acknowledge="ack(event)" fault="handleFault(event)"/>
<mx:Consumer id="consumer" destination="RandomDataPush1"
message="messageHandler(event)" fault="handleFault(event)" />
</fx:Declarations>
<fx:Script>
<![CDATA[
import mx.collections.ArrayCollection;
import com.amcharts.events.SerialChartEvent;
import mx.controls.Alert;
import mx.core.FlexGlobals;
import mx.messaging.events.MessageAckEvent;
import mx.messaging.events.MessageEvent;
import mx.messaging.events.MessageFaultEvent;
import mx.messaging.messages.AsyncMessage;
import mx.rpc.events.ResultEvent;
private var dataString:String =
[Bindable]
private var chartData:ArrayCollection = new ArrayCollection();
/* private function generateChartData():void
{
var firstDate:Date = new Date();
firstDate.setMinutes(firstDate.getMinutes() - 2000);
for(var i:Number = 0; i < 2000; i++)
{
var newDate:Z = new Date(firstDate);
newDate.setMinutes(newDate.getMinutes() + i);
var a:Number = Math.round(Math.random() * (40 + i)) + 100 + i;
var b:Number = Math.round(Math.random() * (1000 + i)) + 500 + i * 2;
chartData.addItem({date:newDate, a:a, b:b});
}
} */
private var Bindable:Object;
private function parseData():void{
// parse data string
var rowArray:Array = dataString.split("\n");
for(var i:uint = 0; i < rowArray.length; i++){
var row:Array = rowArray[i].split(",");
var dateArray:Array = row[0].split("-");
var date:Date = new Date(Number(dateArray[0]), Number(dateArray[1]) - 1, Number(dateArray[2]));
var open:Number = row[1];
var high:Number = row[2];
var low:Number = row[3];
var close:Number = row[4];
//chartData.addItem({date:date, open:open, high:high, low:low, close:close});
}
}
private function onClose():void
{
var msg:AsyncMessage = new AsyncMessage();
msg.body = "Close";
//msg.headers["symbol"]="IBKR";
msg.headers["symbol"]="EUR";
producer.send(msg);
consumer.subscribe();
//PopUpManager.removePopUp(this);
}
public function init():void {
// Alert.show("Hi from init..");
var msg:AsyncMessage = new AsyncMessage();
msg.body = "New";
//msg.headers["symbol"]="IBKR";
msg.headers["symbol"]="EUR";
producer.send(msg);
consumer.subscribe();
var ar:ArrayCollection=new ArrayCollection();
ar.addItemAt("EUR",0);
//pair_chart.dataProvider=ar;
//pair_chart.selectedIndex=0;
var ar1:ArrayCollection=new ArrayCollection();
ar1.addItemAt("Candle",0);
ar1.addItemAt("Bar",1);
}
private function ack(event:MessageAckEvent):void
{
//Alert.show(""+event.message.body);
chart.dataProvider = event.message.body as ArrayCollection;
//mybarChart.dataProvider = event.message.body as ArrayCollection;
}
private function handleFault(event:MessageFaultEvent):void
{
Alert.show("fault"+event.faultString);
}
private function messageHandler(event:MessageEvent):void
{
var dateTime:Date = new Date();
var obj:Object = new Object();
//Alert.show("hi "+event.message.body);
//obj.time = format.format(new Date()).toString();
//chart.dataProvider = event.message.body as ArrayCollection;
//FlexGlobals.topLevelApplication.crntpos.ui.chartArrCollection.addAll(event.message.body as ArrayCollection);
chartData.addAll(event.message.body as ArrayCollection);
//Alert.show("chartData.length "+chartData.length);
chart.dataProvider = chartData;
//Alert.show("hi "+chartData.list);
//mybarChart.dataProvider=FlexGlobals.topLevelApplication.crntpos.ui.chartArrCollection;
}
]]>
</fx:Script>
<s:VGroup width="100%" height="100%" paddingBottom="10" paddingTop="10" paddingLeft="10" paddingRight="10">
<amcharts:AmStockChart width="100%" height="100%">
<amcharts:dataSets>
<amcharts:DataSet id="chart" color="#00CC00" dataProvider="{chartData}" categoryField="date" title="First data set">
<amcharts:fieldMappings>
<amcharts:FieldMapping fromField="a" toField="value"/>
<amcharts:FieldMapping fromField="b" toField="volume"/>
</amcharts:fieldMappings>
</amcharts:DataSet>
</amcharts:dataSets>
<amcharts:panels>
<!-- to enabled drawing icons, you only need to set drawingIconsEnabled="true" on StockPanel -->
<amcharts:StockPanel drawingIconsEnabled="true" title="Value" height="50%" showCategoryAxis="true">
<amcharts:stockGraphs>
<amcharts:StockGraph bulletBorderColor="#FFFFFF" bullet="round" id="g1" valueField="value" compareField="value" comparable="true"/>
</amcharts:stockGraphs>
<amcharts:stockLegend>
<amcharts:StockLegend/>
</amcharts:stockLegend>
</amcharts:StockPanel>
</amcharts:panels>
<amcharts:periodSelector>
<amcharts:PeriodSelector position="bottom" width="157">
<amcharts:periods>
<amcharts:PeriodButton selected="true" label="1 Hour" period="hh" count="1"/>
<amcharts:PeriodButton label="2 Hours" period="hh" count="2"/>
<amcharts:PeriodButton label="6 Hours" period="hh" count="6"/>
<amcharts:PeriodButton label="1 Day" period="DD" count="1"/>
<amcharts:PeriodButton label="MAX" period="MAX"/>
</amcharts:periods>
</amcharts:PeriodSelector>
</amcharts:periodSelector>
<amcharts:chartScrollbarSettings>
<amcharts:ChartScrollbarSettings height="30" graph="{g1}"/>
</amcharts:chartScrollbarSettings>
<amcharts:categoryAxesSettings>
<amcharts:CategoryAxesSettings minPeriod="mm"/>
</amcharts:categoryAxesSettings>
<amcharts:chartCursorSettings>
<amcharts:ChartCursorSettings showValueAxisValue="true" crosshair="true"/>
</amcharts:chartCursorSettings>
</amcharts:AmStockChart>
</s:VGroup>
</s:Application>