Preset LaTeX parameters/arguments

[Daniel]

Hi,

Is it possible to define a layout/paragraph style with a preset LaTeX 
parameter/argument?

I tried `LatexParam` but that just outputs the text without interacting 
with the arguments inserted via Argument insets. For example, if I use

LatexParam [label*=\alph*)]

to a Numbered List, the result is

\begin{enumerate}[label*=\alph*)]
\item
\end{enumerate}

However, if I try to add another (optional) argument via the List 
Preamble inset, say `ref=\alph*` I get

\begin{enumerate}[label*=\alph*)][ref=\alph*]
\item
\end{enumerate}

which gives an error. Instead it seems what I would need is

\begin{enumerate}[label*=\alph*), ref=\alph*]
\item
\end{enumerate}

Is there a way to achieve this in LyX?

Daniel