<?xml version="1.0" encoding="utf-8"?>
  <mx:Application xmlns:mx="http://www.adobe.com/2006/mxml">
  
          <mx:Script>
                  <![CDATA[
                          
                          [Bindable]
                          private var myDP:Array = [
                                  {label: "Customer 1", selected: true},
                                  {label: "Customer 2", selected: false}
                          ];
                          
                  ]]>
          </mx:Script>
          
          <mx:DataGrid dataProvider="{myDP}">
                  <mx:columns>
                          <mx:DataGridColumn dataField="label" headerText="Label" />
                          <mx:DataGridColumn dataField="selected">
                                  <mx:itemRenderer>
                                          <mx:Component>
                                                  <mx:VBox verticalAlign="middle" horizontalAlign="center">
                                                          <mx:CheckBox />
                                                  </mx:VBox>
                                          </mx:Component>
                                  </mx:itemRenderer>
                          </mx:DataGridColumn>
                  </mx:columns>
          </mx:DataGrid>
          
  </mx:Application>