how do assign a value to a html hidden input

An
asp.net button calls an HTML page which contain hidden input.
How do I assign
the Session("TotalAmount") to  value in that html hidden fields  <input type="hidden"   name="chargetotal"  value="------"  />????.
Righ now I
am manually assigning 1.00 to the chargetotal input. But How do I assign it a
value comming from the asp.net form which it is store in a
session("TotalAmount") variable.

Any help is greatly
appreciated.



Here is the code :


<body>
<h1>Heading</h1>
<h3>Product/Price</h3>
<p>Description
about the product</p>
<br />
<form
action="https://www.linkpointcentral.com/lpc/servlet/lppay"
method="post">
<input type="hidden" name=&q ...