Cookie Problem , assistant need !

Hi all, I've already tried by best but I can't find out what my problem is.
I have the code as below :



Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load





If Request.Cookies("LCK") Is Nothing Then


Me.Visible = True


Else


Me.Visible = False


End If


End Sub


Public Sub CookieAdd(ByVal email As String)


Dim locookie As HttpCookie


locookie = New HttpCookie("LCK")


locookie.Values.Add("UID", email.ToString)


locookie.Expires = DateTime.Now.AddDays(1)


locookie.Secure = True


HttpContext.Current.Response.Cookies.Add(locookie)


End Sub


Public Sub CookieRemove()


Dim locookie As HttpCookie


locookie = HttpContext.Current.Request.Cookies("LCK")


If locookie.Value <> "" Then


locookie.Expires = DateTime.Now.AddHours(-2)


HttpContext.Current.Response.Cookies.Add(locookie)


End If


End Sub


Public Function CookieExist() As Boolean


Dim cookie As HttpCookie


If Not HttpContext.Current.Request.Cookies("LCK") Is Nothing Then


Return True


Else





Return False


End If


End Function


Public Function CookieGet() As String


If Not HttpContext.Current.Request.Cookies("LCK") Is Nothing Then


Return HttpContext.Current.Server.HtmlEncode(HttpContext.Current.Request.Cookies("LCK").Value)


End If


End Function





On Authentication , I have set the value of cookie



If Not Request.Cookies("LCK") Is Nothing Then


CookieRemove()


End If


CookieAdd(uc.Email.ToString)



Response.AppendHeader("Refresh", "1;URL=testing.aspx?logged=true")


I have no idea why there is no value on Request.Cookies("LCK")


can anyone explain to me the step to using cookie in asp.net 1.1 ?
Or perhaps telling me what's wrong with my code ? As I can still see my cookie text file on my local machine.