如何为绘图文档添加参数？

如何解决如何为绘图文档添加参数？

我想在 catia v5 中为绘图文档添加一个参数。 但是我找不到CAA函数， 我使用的一些代码：

HRESULT rs = S_OK;

CAtinit* piInitOnDoc = NULL;
rs = pDrawingDoc -> QueryInterface(IID_CAtinit,(void**) &piInitOnDoc);

const CATIdent idCATIContainer = "CATIContainer";
CATIContainer* piRootContainer = NULL;
piRootContainer = (CATIContainer*) piInitOnDoc -> GetRootContainer(idCATIContainer);
if(NULL != piRootContainer)
{
    CATICkeParmFactory* piFact = NULL;
    rs = piRootContainer->QueryInterface(IID_CATICkeParmFactory,(void**) &piFact);

    CATIParmpublisher* piPublish = NULL;
    rs = piRootContainer->QueryInterface(IID_CATIParmpublisher,(void**) &piPublish);

    CATICkeParm_var spBeamLength = piFact->CreateString("DrawingNo","FS-01-000099");
    piPublish->Append(spBeamLength);
}