[MiKTeX] Prosper-replace word

[<SAU...@ch...>]

Hi MiKTex listers,

I have a problem with the proper package for slides. I want to replace a
word by an other in an unique slide. My code is:

\overlays{2}{
\begin{slide}{Name of slide}
\FromSlide{1}
\begin{itemize}
 \item Bla Bla 1
 \item Bla \onlySlide{1}{Blo}   \fromSlide{2}{Oops Bla 2}
 \item Bla Bla 3
\end{itemize}
\onlySlide{2}{$\Rightarrow$ Crit=E8res =E0 optimiser}
\end{slide}}

but it does not work as I see "Bla Blo" then "Bla       Oops Bla 2", I mean
an empty space for "Blo".

Any idea??
Thanks a lot.

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Erik-Andr=E9 SAULEAU

SEAIM
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Tel: 03-89-64-79-95
M=E9l: sau...@ch...
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