Referencing custom environments with custom counters

gistfile1.tex

\newcounter{mycounter}

\newenvironment{myenv}[2][]{
	\begin{adjustwidth}{30pt}{30pt}\widowpenalties 1 10000
	\refstepcounter{mycounter}
	\begingroup
		\GetTitleStringSetup{expand}%
		\subsubsection*{Foo~\arabic{mycounter}: {#2}}%
		\ifthenelse{\equal{#1}{}}{}{\label{foo:#1}}\vspace{-7.5pt}
	\endgroup
\noindent\ignorespaces}{
	\end{adjustwidth}}

\newcommand{\myenvref}[1]{\emph{\nameref{foo:#1}}}