ItemRenderer combobox and button inside datagrid

Hello All,

I am trying to pass the selectedItem from the comboxbox to click event of a button. Both of these components are present inside a datagrid.

A sample of case looks like :

Main.mxml

<mx:DataGrid id="dg1"  dataProvider="{initDG}" rowCount="4">
      <mx:columns>
      <mx:DataGridColumn  dataField="Artist"/>
     <mx:DataGridColumn dataField="Album" />

        <mx:DataGridColumn id="test" resizable="true" headerText="Account Options" 
                    itemRenderer="components.comboButton" />   
      <mx:DataGridColumn dataField="acctOption" headerText="Account Actions"
                <mx:itemRenderer>
                    <mx:Component>
                        <mx:LinkButton label="Go" click="parentDocument.testing()"/>
                    </mx:Component>
                </mx:itemRenderer>
            </mx:DataGridColumn>
        </mx:columns>
  </mx:DataGrid>

 

private var initDG:ArrayCollection = new ArrayCollection([ 
{Artist:'Pavement', Album:'Slanted and Enchanted', 
Price:11.99, State:"AL"}, 
{Artist:'Pavement', Album:'Brighten the Corners', 
Price:11.99, State:"AL"} 
]);

And comboButton.mxml looks like :

<mx:ComboBox id="comboBox">
        <mx:dataProvider>
            <mx:Array>
                <mx:Object label="one" />
                <mx:Object label="two" />
                <mx:Object label="three" />
                <mx:Object label="four" />
                <mx:Object label="five" />
                <mx:Object label="six" />
            </mx:Array>
        </mx:dataProvider>
    </mx:ComboBox>

So how can i display the value of the selectedItem, when the user selectes of the values from comboxbox and clicks the "Go" button.

I want to somehow show that value in my function called "testing()"

Please advise.

Thank you