[belajar-access] Ribbon Access 2007

[bingtiong]

Salam Access,

Saya sudah membuat file UsysRibbons dimana field RibbonXML berisi :

<customUI xmlns="http://schemas.microsoft.com/office/2006/01/customui"; 
onLoad="CallbackOnLoad">
   <ribbon startFromScratch="true">
      <tabs>
         <tab id="MENU" label="Menu">
            <group id="MyGroup" label="Master">
              <button id="MyBtn1" getSize="CallbackGetSize" label="Barang  " 
imageMso="BevelShapeGallery" getKeytip="CallbackGetKeytip" 
onAction="MyButtonCallbackOnAction" getScreentip="CallbackAllGetItemScreentip"/>
              <button id="MyBtn2" getSize="CallbackGetSize" label="Supplier" 
imageMso="BevelShapeGallery" getKeytip="CallbackGetKeytip" 
onAction="MyButtonCallbackOnAction"/>
            </group>
         </tab>
      </tabs>
   </ribbon>
</customUI>

Tapi kenapa pas saya klik Button "Barang" tidak dijalankan perintah onAction 
nya.
Padahal module "MyButtonCallbackOnAction" hanya saya kasih perintah tampilkan 
pesan. 

Tolong teman-2 ada yg bisa bantu, thk's.