Change data in data grid when Combox filters are changed

[JJSAM]

hey guys, '
Need some help, I have drop down combobox and data grid with data. I
want to change the data in DG with change in the the filters Example:
<?xml version="1.0" encoding="utf-8"?>
<mx:Canvas xmlns:mx="http://www.adobe.com/2006/mxml" width="1200"
height="766" x="0" y="0" creationComplete="initBL()">
<mx:Script>
<![CDATA[
import mx.controls.Alert;
import mx.collections.ArrayCollection;
import mx.rpc.events.ResultEvent;
import mx.controls.dataGridClasses.DataGridColumn;

[Bindable] private var test:ArrayCollection;
private function initBL():void {
Data.TST();
}
private function resultTST(event:ResultEvent):void{
test = ArrayCollection(event.result);
}
private function select_TST():void {
Alert.show(test.getItemAt(comboTST.selectedIndex).label);
}
]]>
</mx:Script>
<!--Database Server Connection -->
<mx:RemoteObject id="Data" destination="ColdFusion"
source="bin.files.BL" result="DG.dataProvider = event.result;">
<mx:method name="getTST" result="resultTST(event)"/>
<mx:method name="getData" result="DG.dataProvider =
event.result;"/>
</mx:RemoteObject>
<mx:ComboBox x="10" y="60" width="110" id="comboTST"
dataProvider="{test}" change="select_TST()"></mx:ComboBox>
<mx:DataGrid id="DG" top="90" left="10" right="10" bottom="10"
creationComplete="Data.getData();">
<mx:columns>
<mx:DataGridColumn headerText="CFS" dataField="CFSs"/>
<mx:DataGridColumn headerText="TOOL" dataField="TOOLs"/>
</mx:columns>
</mx:DataGrid>
</mx:Canvas>


ANy help is appreciated.......