Change the background The color of a datagrid cell based on several conditions in Flex

Hi, I am very new to Adobe Flex, I apologize if my question sounds stupid. One way or another, it is. I am trying a simple datagrid that checks basically 2 conditions 1) If the Artist is 01 and the Album is “Album 01”, set Background to the appropriate cell in the “Year” column.

With the code “set the style” to “Background color” below, since the property does not work, but changing the font color works, and secondly, I'm not sure how to write the code to get the above nested conditions? If anyone could help me in this aspect, I would really be grateful. Thank! in advance.

Below is the code: Newdatagrid.mxml

<?xml version="1.0" encoding="utf-8"?>
<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" minWidth="955"          minHeight="600" >
<fx:Script>
    <![CDATA[
        import mx.collections.ArrayCollection;
        import mx.controls.Alert;
        [Bindable]
        public static var initDG:ArrayCollection = new ArrayCollection([
            {Artist:'01', Album:'Album 01', Year:'2008'},
            {Artist:'01', Album:'Album 02', Year:'2009'},
            {Artist:'03', Album:'Album 03', Year:'2007'},
            {Artist:'03', Album:'Album 04', Year:'2003'},

        ]); 

    ]]>

</fx:Script>


<s:VGroup>
    <s:DataGrid id="myGrid" width="360" dataProvider="{initDG}">   
        <s:columns>
            <s:ArrayList>
                <s:GridColumn dataField="Artist"    headerText="Artist" itemRenderer="CellRenderer"/>
                <s:GridColumn dataField="Album" headerText="Album" itemRenderer="CellRenderer"/>
                <s:GridColumn dataField="Year" headerText="Year" itemRenderer="CellRenderer"/>
            </s:ArrayList>
        </s:columns>       
    </s:DataGrid> 
</s:VGroup>
</s:Application>

Renderer:

<?xml version="1.0" encoding="utf-8"?>
<s:GridItemRenderer xmlns:fx="http://ns.adobe.com/mxml/2009" 
                xmlns:s="library://ns.adobe.com/flex/spark" 
                xmlns:mx="library://ns.adobe.com/flex/mx" 
                    implements="mx.controls.listClasses.IDropInListItemRenderer">
<fx:Script>
    <![CDATA[
        import mx.controls.dataGridClasses.DataGridListData;
        import mx.controls.listClasses.BaseListData;
        import mx.controls.Alert;

        private var _listData:BaseListData;

        [Bindable]private var isSelected:Boolean = false;

        override public function set data( value:Object ) : void 
        {
            super.data = value;
            lblData.text = data[column.dataField];

            if (data[column.dataField].valueOf() >= 2008){
                //styleName="myStyles.BgColor";
                setStyle('backgroundColor',0xFFFF00);
            }else{
                setStyle('backgroundColor',0x32CD32);
            }

        }

        [Bindable]public function get listData() : BaseListData
        {
            return _listData;
        }
        public function set listData( value:BaseListData ) : void
        {
            _listData = value;
        }

    ]]>
</fx:Script>
<s:Label id="lblData" top="9" left="7" width="100%" height="100%"    textAlign="center"/>

</s:GridItemRenderer>

: : = 01 >= 2008,