This seems to work:

\startitemize[n]
\item Insert the key
\item Try to turn the key
\stopitemize
If key is working
\startitemize[n,continue]
\item Open the door
\stopitemize

If key is not working
\setupitemize[start=3] %%  <============
\startitemize[n]
\item  Change key
\item Goto step 1
\stopitemize

Alan

On Tue, Dec 30, 2014 at 12:38 PM, Eric Gerard <eric.b.gerard@gmail.com>
wrote:

> Hello everybody and thanks in advance for your advice,
>
> I’m unable to find in the documentation and in the wiki the way to start
> an itemized list with a number different from 1, for instance with 3.
>
> What I want to achieve is something like:
>
>
>    1. Insert the key
>    2. Try to turn the key
>
> *If key is working*
> 3.  Open the door
> *If key is not working*
> 3.  Change key
> 4.  Goto step 1
> So what is the way to start the list after « If key is not working » with
> the number 3 ?
>
> Eric Gerard
>
>
>
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