如何将customUI事件连接到Word 2010中的宏？

customUI\\customUI14.xml

<mso:customUI xmlns:x2=\"http://schemas.microsoft.com/office/2009/07/customui/macro\" xmlns:x1=\"DPOfcX.DocumentRibbon\" xmlns:mso=\"http://schemas.microsoft.com/office/2009/07/customui\">
    <mso:ribbon>
        <mso:tabs>
            <mso:tab idQ=\"mso:TabHome\">
                <mso:group id=\"TestGroup\" label=\"TestGroup\" autoScale=\"true\">
                    <mso:button onAction=\"SendAsEmail.SendAsEmailRibbon\" idQ=\"x2:TestSendAsEmail\" label=\"Send As Email\" imageMso=\"ListMacros\" visible=\"true\"/>
                    <mso:button onAction=\"SendAsEmail.ShowFormRibbon\" idQ=\"x2:TestShowForm\" label=\"Enter Letter Data\" imageMso=\"ListMacros\" visible=\"true\"/>
                </mso:group>
            </mso:tab>
        </mso:tabs>
    </mso:ribbon>
</mso:customUI>

Sub ShowFormRibbon(IControl As IRibbonControl)

End Sub

Sub SendAsEmailRibbon(IControl As IRibbonControl)

End Sub