How do I get Undo and Redo to appear in my custom QAT toolbar?

[dlindner999]

Hi all,
I am trying to create a custom QAT toolbar. Everything works except for the Undo and Redo buttons. They're giving me an error:
The specified control type 'button' is incompatible with the actual control type 'gallery' ID: Undo
The specified control type 'button' is incompatible with the actual control type 'gallery' ID: Redo

<customUI xmlns=http://schemas.microsoft.com/office/2009/2007/customui onLoad="OnRibbonLoad">
   <ribbon startFromScratch="true">
      <qat>
         <documentControls>
            <button idMso ="Copy"/>
            <button idMso ="Paste"/>
            <button idMso ="PrintDialogAccess"/>
            <button idMso ="FilePrintPreview"/>
            <button idMso ="Undo"/>
            <button idMso ="Redo"/>
         </documentControls>
      </qat>
   </ribbon>
</customUI>

"OnRibbonLoad" is a function in a module that just opens and closes a dummy form...advice from someone else.
If I take the Undo and Redo lines out of this code, it works fine. No errors.
Any suggestions? Any help would be greatly appreciated!
Thanks,


Dan

[dlindner999]

I've also tried changing it to <gallery idMso="Undo" /> but then I get another error about Gallery is unexpected according to content model of parent element.

[dlindner999]

I found the fix for this elsewhere. Undo and Redo are referred to in Access as Controls, not Buttons. I changed
<button idMso ="Undo"/>
to
<control idMso ="Undo"/>
and it now works.