Unable to pass session var between app pages

[Manweevil]

I'm having trouble passing a session variable from a form page to multiple
action pages. The form page points to the first action page, but I'm unsure of
how to pass the variable to the other action pages.

The Application.cfc page has the following:

<cfcomponent output="false">

<cfset this.name="permit">
<cfset this.sessionManagement=true>

</cfcomponent>

I try to initilize the session variable using:

<cfset SESSION.app_num = FORM.search_info>

in the form page, but I cannot access it in the action pages.

Thanks in advance.