Word Wrap in Spark DataGrid Header

DataGridHeaderWrap.mxml

<?xml version="1.0"?>
<s:Group
        xmlns:fx="http://ns.adobe.com/mxml/2009"
        xmlns:s="library://ns.adobe.com/flex/spark"
        xmlns:mx="library://ns.adobe.com/flex/mx"
        width="200" height="100"
        >

    <s:DataGrid id="dataGrid" width="100%" height="100%" minHeight="100" variableRowHeight="true"
            >
        <s:columns>
            <s:ArrayList>
                <s:GridColumn dataField="ITEM_1" headerText="Short" width="60"></s:GridColumn>
                <s:GridColumn dataField="ITEM 2" headerText="Long Text tttttttttttttttttttttttttttttttttttttt">
                    <s:headerRenderer>
                        <fx:Component>
                            <s:DefaultGridHeaderRenderer maxDisplayedLines="2"/>
                        </fx:Component>
                    </s:headerRenderer>
                </s:GridColumn>
            </s:ArrayList>
        </s:columns>
    </s:DataGrid>
</s:Group>