Struts Validator Example

[pincopallo_it]

I got my validation.xml which works really well when it checks in the
jsp if the user wrote something in the form.
I m getting crazy to tell the validation.xml to be sure the user
selected one of this selectbox in the jsp !!!

<div align="center">

<html:select size="8" property="variabile"
multiple="true" onchange="aggiornamisure(false);">
<logic:iterate id="variabile" name="variabili" scope="request">
<htmlption
value="<%=((DistinctVarmetValue)variabile).getCOD_VARMET()%>">
<%=((DistinctVarmetValue)variabile).getDESCR_VARMET()%>
</htmlption>
</logic:iterate>
</html:select>

</div>

Any idea?
Thanks
Gio