[flexcoders] NumericStepper as itemRenders in DataGrid don't work as expected

[Tom Chiverton]

This simple DataGrid doesn't appear to work right. 

Click one of the rows, and the value in the NumericStepper is zero, when I 
would expect it to pick up the value from the data provider.

Code (ignore all the script and outputs, just compile and run):

<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"; layout="vertical">
<mx:Script>
<![CDATA[
        import mx.formatters.CurrencyFormatter;
        import mx.collections.ArrayCollection;
        
        [Bindable]
        public static var _moneyFormatter:CurrencyFormatter=new 
CurrencyFormatter();
        [Bindable]      
        private var ac:ArrayCollection=new ArrayCollection(
                [{value:1},{value:10},{value:100},{value:1000},{value:10000}]
        );

 public static function dataGridFormatNumber(item:Object, 
column:DataGridColumn):String{
        if (column.dataField == 'vat' && (item.vatable == 'e' || item.vatable 
== 'z') ){ 
                return _moneyFormatter.format(0);
        }
        return _moneyFormatter.format(item[column.dataField]);
 }
        public function debug(e:*):void{
                trace("value set to "+e.currentTarget.value);   
        }
 
]]>
</mx:Script>    
<mx:DataGrid id="detailGrid" width="952" height="170"
        dataProvider="{ac}"
        editable="true" allowMultipleSelection="true"
        >
        <mx:columns>            
        <mx:DataGridColumn dataField="value" headerText="Value"
                labelFunction="dataGridFormatNumber"
                editorDataField="value">
        <mx:itemEditor>
            <mx:Component>
                <mx:NumericStepper stepSize="0.01" minimum="0" 
maximum="99999999" 
                        dataChange="outerDocument.debug(event)"
                         >
            <mx:Script>
                <![CDATA[                       
                        override public function set data(d:Object):void{
                                trace('set data to '+d);
                                        super.data=d;
                                }
                        override public function set value(v:Number):void{
                                trace('set value to '+v);
                                        super.value=v;
                                }
                ]]>
                </mx:Script>
                </mx:NumericStepper>
            </mx:Component>
        </mx:itemEditor>
    </mx:DataGridColumn>
        </mx:columns>
</mx:DataGrid>    
 
</mx:Application>

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