I am trying to get session variables to load into a few different text boxes. The session variables contain 'shipping info' and if they check the check box it should load the same data into the 'billing info' boxes. When trying to get it to load the text nothing happens - not even with a literal. Any ideas?

My code is below:

Code:
protected void chkSameInfo_CheckedChanged(object sender, EventArgs e)
    {
...