Is it posible to get session value from one application to another application using web service ASP.NET C#

Below is my Web Service code:

[WebMethod(EnableSession = true)]
public string GetStringValue(string sessionstring)
{
// return sessionstring+"1";

 HttpContext.Current.Session["regid"] = sessionstring;

 return HttpContext.Current.Session["regid"].ToString();
}

Below is my first application Code for on button click passing session value to web service

   protected void Button1_Click(object sender, EventArgs e)
{
    localhost.WebService objserv1 = new localhost.WebService();
    Session["RegId"] = "Mazar";
    Label.Text =objserv1.GetStringValue(Session["RegId"].ToString());

}


In second Application need to show on page load.

     protected void Page_Load(object sender, EventArgs e)
{

 //    localhost.WebService objserv1 = new localhost.WebService();
 //     lbl_Value.Text = objserv1.GetStringValue(HttpContext.Current.Session["regid"].ToString());

}


In Second application trying to showing first application session value but not getting any Idea.

<a href="https://i.stack.imgur.com/7gjzi.png">enter image description here