I am using the bellow code. With opA or opD works but not with opB or opD. Perhaps because in the output B and C is used 10^-6! But why?. Also, in OpB and optC the menu reset to OptA .
<%@ page language="java" %>
<%@ taglib uri="/webMathematica-taglib" prefix="msp" %>
<html>
<head>
<title>TITULO</title>
<link rel=stylesheet type='text/css' href='css/estilo1.css'>
</head>
<body bgcolor="#ffffff" >
<form name="formulario" action="biokmodfit2.jsp" method="post">
Choose one option:
<msp:evaluate>
HTMLSelect[{"OpA","OpB","OpC","OpD"}, {2.4*10^-5, 0.32*10^(-5), 2.1*10^-6, 4.2*10^-5}, "dcf", SelectedValues -> {$$dcf}]
</msp:evaluate>
Or
<INPUT TYPE="TEXT" NAME="dcfOptional" ALIGN="LEFT" SIZE="35"
VALUE="<msp:evaluate> MSPValue[$$dcfOptional,"0.0"]
</msp:evaluate>"
/>
<INPUT TYPE="checkbox" NAME="dcfOptionalChbx" >
</td></tr>
<br>
<p class='azulpeque' align='center'>Push EVALUATE <br><img src="images/help.gif" width="1%" heigth="1%" border="0"></a></p>
<center><input type="submit" name="btnSubmit" value="Evaluate" > </center>
<img name="results" src="images/results.gif" class="icon" align="absmiddle" border="0" width="100%">
<font class='rojo'><b> Input data </b></font>
<msp:evaluate>
If[$$dcfOptionalChbx==="on",$$dcf=$$dcfOptional];
HTMLTableForm[MSPBlock[{$$dcf}, {$$dcf}]]
</msp:evaluate>
</form>
</body>
</html>
