cookies not passing the values from one page to another page

hi,
In my application cookies not passing values one page to another page after uploading the web server but on local server it is working properly.
i use for adding cookies
HttpCookie cookie = new HttpCookie("Preferences");
cookie["Location"] = DropDownList1.SelectedValue;
cookie["Range"] = DropDownList2.SelectedValue;
cookie["Roomtype"] = DropDownList3.SelectedValue;
cookie["rooms"] = DropDownList4.SelectedValue;
cookie["Adult"] = DropDownList5.SelectedValue;
cookie["Children"] = DropDownList6.SelectedValue;
cookie["checkin"] = TextBox1.Text;
cookie["checkout"] = TextBox2.Text;
Response.Cookies.Add(cookie);
and for retriving
HttpCookie cookie = Request.Cookies["Preferences"];
if (cookie != null)
{
a = cookie["Location"];
b = cookie["Range"];
c = cookie["Roomtype"];
d = cookie["rooms"];
i = cookie["Adult"];
i1 = cookie["Children"];
 
g = cookie["checkin"];
h = cookie["checkout"];
}