How to pass JavaScript value to JSP variable

Question

I know this is not possible. But I need to do this :
<script language = "Javascript">
function findElement() {
for(i=0; i<document.forms[0].elements.length; i++){
if(document.forms[0].elements.type == 'text') {
var elName = document.forms[0].elements.name;
var elValue = document.forms[0].elements.value;
// Display element name and value
//alert(elName +' = '+ elValue)
<%
String elName = elName;
System.setProperty(%>elName<%, %>elValue<%);
%>
</script>
in JSP. I need to get the name and value of the textbox in the form to just change one property on the JSP System. Any help pls

Answer 1

Thanks man, I think that would work.
I found something else already though and it works on the same page
<%
     Enumeration parameters = request.getParameterNames();
     String parameterValue = " ";
     String parameterName = " ";
               while (parameters.hasMoreElements()) {
                    parameterName = (String) parameters.nextElement();
                    parameterValue = request.getParameter(parameterName);
               out.println("NAME =========" + parameterName);
               out.println("VALUE =========" + parameterValue);
               //System.setProperty(parameterName, parameterValue);
     %>
Thanks again for the help