How can I get MasterSpreadList of a document?

Question

Here's my code:
    IActiveContext* context = GetExecutionContextSession()->GetActiveContext();
    ASSERT(context);
    if(context == nil){
      M5Utils::alert("active context was nil!"); break;
    IDocument* document = context->GetContextDocument();
    ASSERT(document);
    if(document == nil){
      M5Utils::alert("document was nil!"); break;
    InterfacePtr<IMasterSpreadList> masterSpreadList(document, UseDefaultIID());
    ASSERT(document);
    if(masterSpreadList == nil){
      M5Utils::alert("masterSpreadList was nil!"); break;
When acquiring the masterspreadlist compiler says there's no matching function
     error: no matching function for call to 'InterfacePtr<IMasterSpreadList>::InterfacePtr(IDocument*&, UseDefaultIID)'
What's the correct function then? Am I doing something wrong?
Thx!

Answer 1

Well yes, that was it.. and this wasn't the first time..