Highlight only current subsection, hide subsections of other sections

\newcommand{\MyToc}[1]
{
\AtBeginSubsection[]
{
\begin{frame}
\frametitle{#1}
\tableofcontents[currentsection,hideothersubsections,currentsubsection]
\end{frame}
}
}


It shows all sections and subsections with emphasis on the current section and subsection, but I want only the subsections of the current section to be shown, the current subsection be emphasized AND subsections of other sections not to be shown at all:

• section 1
• section 2
• subsection 1 <= inactive, shaded
• subsection 2 <= active subsection, strong colour
• subsection 3 <= inactive, shaded
• section 3

How can that be achieved?

Once again I found the solution in the docs (page 100):

    ...
\tableofcontents
[
currentsection,
currentsubsection,