Cannot get AdvancedDataGridRendererProvider to work

I want to set the first column in an advancedDataGrid to bold when another column in the row is blank. I created a Component mxml renderer to do the trick but I cannot get it to work. I don't think the renderer is even getting called as a break in the renderer is never hit when I run in debug mode.

My code follows. What am I doing wrong? Any help would be greatly appreciated.

Thanks,

John

Here is my AdvancedDataGrid. The provider is an XMLListCollection...

<mx:AdvancedDataGrid id="adgFormWithSignatures" visible="{oneStudentSelected}"  x="9" y="407" width="625" height="236"  dataProvider="{formsRequiringSignaures}"  designViewDataType="tree"  doubleClick="adgFormWithSignatures_doubleClickHandler(event)"  doubleClickEnabled="true"  headerColors="{formsSigsHeaderColors}" headerHeight="50"  headerWordWrap="true" variableRowHeight="true" wordWrap="true">  <mx:columns>       <mx:AdvancedDataGridColumn id="formColumn" width="200"            backgroundColor="#EBE9E9" dataField="form" headerText="Form"            headerWordWrap="true" sortable="false"/>       <mx:AdvancedDataGridColumn width="40" dataField="student" headerText="S"            sortable="false"/>       <mx:AdvancedDataGridColumn width="40" dataField="parent" headerText="P"            sortable="false"/>       <mx:AdvancedDataGridColumn width="40" dataField="teacher" headerText="T"            sortable="false"/>       <mx:AdvancedDataGridColumn width="45" dataField="sponsor" headerText="SP"            sortable="false"/>       <mx:AdvancedDataGridColumn width="45" dataField="qualScientSuper"            headerText="Sc Su" headerWordWrap="true" sortable="false"/>       <mx:AdvancedDataGridColumn width="40" dataField="veterinarian" headerText="V"            sortable="false"/>       <mx:AdvancedDataGridColumn width="50" dataField="priorSRCIRB"            headerText="P SRC IRC" sortable="false"/>       <mx:AdvancedDataGridColumn width="50" dataField="resrchInstSRC"            headerText="R SRC" sortable="false"/>       <mx:AdvancedDataGridColumn width="50" dataField="finalSRC" headerText="F SRC"            sortable="false"/>       <mx:AdvancedDataGridColumn width="45" dataField="uploaded" headerText="U"            sortable="false"/>       <mx:AdvancedDataGridColumn visible="false" dataField="formID"            headerText="form ID"/>       <mx:AdvancedDataGridColumn visible="false" dataField="formStudentID"            headerText="formStudentID"/>       <mx:AdvancedDataGridColumn visible="false" dataField="formProjectID"            headerText="formProjectID"/>  </mx:columns>  <mx:rendererProviders>       <mx:AdvancedDataGridRendererProvider column="{formColumn}"       depth="3" renderer="myComponents.SigFormsRenderer"/>  </mx:rendererProviders></mx:AdvancedDataGrid>

Here is the SigFormsRenderer.mxml component...

<?xml version="1.0" encoding="utf-8"?><!-- src/myComponents/SigFormsRenderer.mxml --><mx:Label xmlns:mx="http://www.adobe.com/2006/mxml" textAlign="center">  <mx:Script>    <![CDATA[       override public function set data(value:Object):void {            if (value["formStudentID"] == "") {                 setStyle("fontWeight", "bold");            } else {                 setStyle("fontWeight", "normal");            }       }    ]]>  </mx:Script></mx:Label>