Getting hidden field value on next page

Hi

I have a hidden value field on a page. On submit I post to a different page. On the page I've posted to I do a Request.Form but I do not get the value just a null value.

This is the initial page


   

The javascript ViewCancellation function is set to a hyperlink in the code behind. The function will have a value like this,cancel

On the page I'm posting to I'm doing this

string sResID = "";

    protected void Page_Load(object sender, EventArgs e)
    {
        HttpContext context = HttpContext.Current;
        sResID = context.Request.Form["ResID"] != null ? context.Request.Form["ResID"] : "";
        sResID = Regex.Replace(sResID, "/[^A-Z]\\d-/g", "");

        context.Response.Write(sResID);

    }

sResID gets no value because context.Request.Form["ResID"] is null. How can I get the value to this page. I've enabledviewstate