[Zope] Value of a Session Variable

[Asad Habib]

I have a variable which I have placed in the SESSION attribute of the
REQUEST object. This variable is being initialized to a value of None by a
DTML method. If an error occurs after a form is submitted, the value of
this variable is set to the type of error that occurs. In the event that
an error does occur, the user is redirected to an error page. From the
error page, the user has the opportunity to return to the form via a
hyperlink. I need to use the value of this variable in this form but
it exists sometimes and other times it doesn't. The suprising part is that
it always exists on the error page. Simply by clicking on the link on the
error page, the value of this variable is sometimes lost. I am using
Safari as my browser. Has anyone else experienced the same problem? Any
help would be greatly appreciated. Thanks.

- Asad