identity value returned as 0.

I have a contact info that can be used to turn the contact into a customer, to do so I want to send the id from the contact to the other form and to do this I created a stored procedure that returns the id using SCOPE_IDENTITY(), it works in SQL server and returns the identity correctly but when I try to aquire it in Visual Studio and set it in a label for testing it reads as 0.

my stored procedure is as follows.

<div class="code_block">

SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
CREATE PROCEDURE IdentityTest
      @FirstName varchar(50),
      @LastName varchar(50),

      @id int output
AS
BEGIN
      SET NOCOUNT ON;
      INSERT INTO  Employees (FirstName, LastName)
      VALUES (@FirstName, @LastName)
      SET @id=SCOPE_IDENTITY()
      RETURN  @id
END

</div> <div class="code_block">in my form.aspx.cs I have the following to acess the DB.</div> <div class="code_block"></div> <div class="code_block"></div> <div class="code_block">

protected void Button1_Click(object sender, EventArgs e)
    {



        SqlCommand cons = new SqlCommand("IdentityTest", cncon);

        cons.CommandType = CommandType.StoredProcedure;



        cons.Parameters.Add("@FirstName", SqlDbType.NVarChar);
        cons.Parameters.Add("@LastName", SqlDbType.NVarChar);

        cons.Parameters.Add("@id", SqlDbType.Int);





        cons.Parameters["@FirstName"].Value = nom.Value;

        cons.Parameters["@LastName"].Value = dirclie.Value;

        cons.Parameters["@id"].Value = IdCliente;
        string IdClientesString = IdCliente.ToString();

        cncon.Open();

        cons.ExecuteNonQuery();

        Label1.Text = IdClientesString;

        cncon.Close();

</div> <div class="code_block">WHen I press the button, the data is successfully inserted into the DB, but my label reads as 0, meaning the correct id was not taken from the @id parameter.</div> <div class="code_block"></div> <div class="code_block"></div>