@@Identity Not Returning

I have a page that inserts customers into the client database. After the data is inserted it redirects to the customer's policy page using the customer's ID set by @@Identity.

The SQL Command is:

 ALTER PROCEDURE [dbo].[AddBasic]
(
@ln NVarchar(50),
@fn NVarchar(50),
@mAdd NVarchar(50),
@mCity NVarchar(50),
@mState NVarchar(50),
@mZip NVarchar(50),
@pAdd NVarchar(50),
@pCity NVarchar(50),
@pState NVarchar(50),
@pZip NVarchar(50),
@sAdd NVarchar(50),
@sCity NVarchar(50),
@sState NVarchar(50),
@sZip NVarchar(50),
@hPhone NVarchar(50),
@cPhone NVarchar(50),
@wPhone NVarchar(50),
@oPhone NVarchar(50),
@eMail NVarchar(50),
@DOB NVarchar(50),
@SSN NVarchar(50),
@liState NVarchar(50),
@liNum NVarchar(50),
@acctSource NVarchar(50),
@active NVarchar(50),
@County NVarchar(50)
)
AS
DECLARE @custNum int
INSERT basicInfo
(lastName, firstName, mailingAddress, mailingCity, mailingState, mailingZip, physicalAddress, physicalCity, physicalState, physicalZip,
seasonalAddress, seasonalCity, seasonalState, seasonalZip, homePhone, cellPhone, workPhone, otherPhone, email, DOB, SSN, liscenceState,
driverLiscense, acctSource, [status], county)
VALUES (@ln,@fn,@mAdd,@mCity,@mState,@mZip,@pAdd,@pCity,@pState,@pZip,@sAdd,@sCity,@sState,@sZip,@hPhone,@cPhone,@wPhone,@oPhone,@eMail,@DOB,@SSN,@liState,@liNum,@acctSource,
@active, @County)
SET @custNum = @@Identity
SELECT @custNum

 The ASPX page has two parts, the SQL Data Source: <asp:SqlDataSource ID="sqlInsertCustomer" runat="server" ConnectionString="<%$ ConnectionStrings:ConnectionString %>"
InsertCommand="AddBasic"
SelectCommand="SELECT acctNumber FROM basicInfo WHERE (acctNumber = 5)" InsertCommandType="StoredProcedure">
<InsertParameters>
<asp:FormParameter FormField="lName" Name="ln" />
<asp:FormParameter FormField="fName" Name="fn" />
<asp:FormParameter FormField="mAdd" Name="mAdd" />
<asp:FormParameter FormField="mCity" Name="mCity" />
<asp:FormParameter FormField="mState" Name="mState" />
<asp:FormParameter FormField="mZip" Name="mZip" />
<asp:FormParameter FormField="pAdd" Name="pAdd" />
<asp:FormParameter FormField="pCity" Name="pCity" />
<asp:FormParameter FormField="pState" Name="pState" />
<asp:FormParameter FormField="pZip" Name="pZip" />
<asp:FormParameter FormField="sAdd" Name="sAdd" />
<asp:FormParameter FormField="sCity" Name="sCity" />
<asp:FormParameter FormField="sState" Name="sState" />
<asp:FormParameter FormField="sZip" Name="sZip" />
<asp:FormParameter FormField="hPhone" Name="hPhone" />
<asp:FormParameter FormField="cPhone" Name="cPhone" />
<asp:FormParameter FormField="wPhone" Name="wPhone" />
<asp:FormParameter FormField="oPhone" Name="oPhone" />
<asp:FormParameter FormField="eMail" Name="eMail" />
<asp:FormParameter FormField="DOB" Name="DOB" />
<asp:FormParameter FormField="SSN" Name="SSN" />
<asp:FormParameter FormField="dlState" Name="liState" />
<asp:FormParameter FormField="dlNum" Name="liNum" />
<asp:FormParameter FormField="aSource" Name="acctSource" />
<asp:FormParameter FormField="txtCounty" Name="County" />
<asp:Parameter Name="active" DefaultValue="Active" Type="String" />
</InsertParameters>
</asp:SqlDataSource>

 and the redirect:Public Sub Redirect()
Dim x As Integer
x = SqlDataSource1.Insert()
Response.Redirect("~/Main/Main.aspx?q=" & x)
End Sub