MoreSelected() doesn't return anything

Hello,

I am trying to select a face, and apparently when using MoreSelected(),always says nothing is selected...
Why is this?

myContext->CloseAllContexts();
myContext->OpenLocalContext();
myContext->ActivateStandardMode (TopAbs_FACE);

myContext->InitSelected();
if (myContext->MoreSelected()) {
qDebug() } else {
qDebug() }