Separator in dynamic toolbar

Hi,

I have created a dynamic toolbar (not loaded from resources):

CXTPToolBar* pToolBar2 = pCommandBars->Add(_T("Yoav"), xtpBarTop);

pToolBar2->SetBarID(12000);

UINT* pArr = new UINT[3];

pArr[0] = 1001;

pArr[1] = 1002;

pArr[2] = 1003;

CBitmap* pBmp = new CBitmap;

pBmp->LoadBitmap(IDB_BITMAP1);

pToolBar2->SetButtons(pArr,3);

CXTPImageManager* pImageManager = pCommandBars->GetImageManager();

pImageManager->SetIcons(*pBmp,pArr,3,CSize(16,15),xtpImageNormal,TRUE);

I want to add a separator between item2 and item3.

How do I do that ?