How to fill in a text input box with a specified value?

Hi folks,

Suppose I have the following in my JSP page.

    <form action="myform.jsp" method="post">
 
    Type Your Value:
      <input type="text" name="yourval" size=35
            value="${fn:escapeXml(param.yourval)}">
       <font color=red>${fn:escapeXml(yourvalError)}</font>

    </form>


The above will give me a text box where I can type some value.
But it will be a blank text box.

I want the text box to have an initial value that shows inside the text box, like "123".
How can I do this?

Also, I want to call <jsp:getProperty name="mybean" property="yourVal" />
and put the value returned by this call, inside the text box as the initial value.

How can I do this?

Thank you.