Problem passing Session variable as URL parameter?

Hi,
I am trying to create a multiple page entry form using
coldfusion session. But I am having some problem when passing the
session variable to url parameter. For test purpose I have created
the following code:
<cfif Not IsDefined("SESSION.AE")>

<cfset SESSION.AE = StructNew()>

<cfset SESSION.AE.StepNum = 1>
</cfif>
<cfif IsDefined("Form.GoBack")>
<cfset SESSION.AE.StepNum = #url.StepNum# - 1>
<cfelseif IsDefined("Form.Next")>
<cfset SESSION.AE.StepNum = #url.StepNum# + 1>
</cfif>
<html>
<head>
<title>Untitled Document</title>
<meta http-equiv="Content-Type" content="text/html;
charset=iso-8859-1">
</head>
<body>
<form method="post"
action="/AE/try.cfm?StepNum=#SESSION.AE.StepNum#">
<input type="submit" name="GoBack" value="Back">
<input type="submit" name="Next" value="Next">
</form>
</body>
</html>
When run it I get the following error:
The value "" cannot be converted to a number
The error occurred in C:\CFusionMX\wwwroot\AE\try.cfm: line
11
9 : <cfset SESSION.AE.StepNum = #url.StepNum# - 1>
10 : <cfelseif IsDefined("Form.Next")>
11 : <cfset SESSION.AE.StepNum = #url.StepNum# + 1>
12 : 
13 : </cfif>
I couldn't figure out where is the problem. Any help is
really appreciated.
Thanks in advance.

You are mixing up your gets and posts aren't you?
You have your form method set to post which creates form
variables not
url variables. So when you try to use the url variable to set
your
session it does not exist.
Change your SESSION.AE.StepNum = #url.StepNum# to
Session.AE.StepNum =
form.StepNum, note there is no need for the #'s.
OR
change your form method="post" to form method="get"
Nagelia wrote:
> Hi,
>
> I am trying to create a multiple page entry form using
coldfusion session. But
> I am having some problem when passing the session
counter to url parameter. For
> test purpose I have created the following code:
>
> <cfif Not IsDefined("SESSION.AE")>
> 
> <cfset SESSION.AE = StructNew()>
> 
> <cfset SESSION.AE.StepNum = 1>
> </cfif>
> <cfif IsDefined("Form.GoBack")>
> <cfset SESSION.AE.StepNum = #url.StepNum# - 1>
> <cfelseif IsDefined("Form.Next")>
> <cfset SESSION.AE.StepNum = #url.StepNum# + 1>
> </cfif>
>
> <html>
> <head>
> <title>Untitled Document</title>
> <meta http-equiv="Content-Type" content="text/html;
charset=iso-8859-1">
> </head>
> <body>
> <form method="post"
action="/AE/try.cfm?StepNum=#SESSION.AE.StepNum#">
> <input type="submit" name="GoBack" value="Back">
> <input type="submit" name="Next" value="Next">
> </form>
> </body>
> </html>
>
> When run it I get the following error:
>
> The value "" cannot be converted to a number
>
>
> The error occurred in C:\CFusionMX\wwwroot\AE\try.cfm:
line 11
>
> 9 : <cfset SESSION.AE.StepNum = #url.StepNum# - 1>
> 10 : <cfelseif IsDefined("Form.Next")>
> 11 : <cfset SESSION.AE.StepNum = #url.StepNum# +
1>
> 12 : 
> 13 : </cfif>
>
> I couldn't figure out where is the problem. Any help is
really appreciated.
>
> Thanks in advance.
>
>
>
>

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