Can't register for PIM notifications in WM 5 OS

I'm having some trouble getting the WM 5 OS to notify my application 
when a task has been created, altered, or deleted. From the limited 
SDK documentation, it explains that in need to register for such 
notifications which I did using the code below (following the 
provided sample code). However, when I make the SetProps() method 
call I get hr = E_ACCESSDENIED. Now, I seem to be able to other 
operations with this coding (such as using the GetProps() to retrieve 
category labels), but I just can't seem to use SetProps() to register 
for notifications. 

Can anyone help with some advice? 

Thanks, 

ppcinfo 

------------------------------------------

  HRESULT   hr             = E_FAIL; 
  IFolder   *pFolder       = NULL; 
  IItem     *pFolderIItem  = NULL; 

  CEPROPVAL propval  = {0}; 

  if ( WM5_InitPoom(g_hWnd) == FALSE ) 
       return (FALSE); 

  hr = g_WM5polApp->GetDefaultFolder(olFolderTasks,&pFolder); 

  if (FAILED(hr) || NULL == pFolder) 
  { 
    WM5_ShutdownPoom(); 
    return FALSE; 
  } 

  // Get IItem from IFolder 

  hr = pFolder->QueryInterface(IID_IItem,(LPVOID*)&pFolderIItem); 

  if(FAILED(hr) || NULL == pFolderIItem) 
  { 
    pFolder->Release();  pFolder = NULL; 
    WM5_ShutdownPoom(); 
    return FALSE; 
  } 

  propval.propid    = PIMPR_FOLDERNOTIFICATIONS; 
  propval.val.ulVal = PIMFOLDERNOTIFICATION_ALL; 

  hr = pFolderIItem->SetProps(0,1,&propval); 

  //- SetProps() always returns E_ACCESSDENIED 






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