passing variables across multiple pages in asp

Hi Everyone!

I've stored the value of a textbox into a session variable. I need to access this variable from several pages but i can only access it from the next page. Is there any way I can access it from more than one page:

My code from the second(and consequent)pages is as follows:

If Request.Form("txtPostCode")="" Then
Session("postcode")="No Postcode Supplied"
Else
Session("postcode")=Request.Form("txtPostCode")
End If

Response.write(Session("postcode"))


The variable is displayed on only the second page but the "no postcode supplied" text appears on all the others.

Is there a way of passing a variables across multiple pages??

Any help would be appreciated!
Thanks!