"BC30451: Name '<variable>' is not declared." error

I'm getting a "BC30451: Name 'CRListType' is not declared." error

Here's the top of the page where I'm getting stuck...

<%@ Control Language="vb" AutoEventWireup="false"
Codebehind="CRList.ascx.vb" Inherits="x.x.x.net.WebUserControl1"
TargetSchema="http://schemas.microsoft.com/intellisense/ie5" %>

<% If CRListType = "full" %> ----------ERROR IS OCCURRING HERE -----------
------------------------

Here's my .vb page behind it:

Public MustInherit Class WebUserControl1
Inherits System.Web.UI.UserControl

#Region " Web Form Designer Generated Code "

'This call is required by the Web Form Designer.
<System.Diagnostics.DebuggerStepThrough()> Private Sub
InitializeComponent()

End Sub

Private Sub Page_Init(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles MyBase.Init
'CODEGEN: This method call is required by the Web Form Designer
'Do not modify it using the code editor.
InitializeComponent()
End Sub

#End Region

Private Sub Page_Load(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles MyBase.Load
'Put user code to initialize the page here
End Sub

End Class