I just want to insert a record into database and it is not working. How changes should I make?

An exception of type 'System.Data.SqlClient.SqlException' occurred in System.Data.dll but was not handled in user code

Additional information: Procedure or function spInsertFunction has too many arguments specified.

public ActionResult Create(FunctionByRole functionByRole)
       {
           FunByRoleFunctions obj = new FunByRoleFunctions();
           obj.AddFunctionByRole(functionByRole);

           return RedirectToAction("Index");
       }

create procedure [dbo].[spInsertFunction]
@RoleID int=0 output,
@FunctionID int
as
begin
insert into FunctionByRole values (@RoleID,@FunctionID)
set @RoleID=@@IDENTITY
end

public void AddFunctionByRole(FunctionByRole functionByRole)
        {
            string connectionString = ConfigurationManager.ConnectionStrings["ChequeVerificationContext"].ConnectionString;
            List<FunctionByRole> functionByRoles = new List<FunctionByRole>();
            using (SqlConnection con = new SqlConnection(connectionString))
            {
                SqlCommand cmd = new SqlCommand("[spInsertFunction]", con);
                cmd.CommandType = CommandType.StoredProcedure;

                cmd.Parameters.Add("@FunByRoleID", SqlDbType.Int).Value = functionByRole.FunByRoleID;
                cmd.Parameters["@FunByRoleID"].Direction = ParameterDirection.Output;

                cmd.Parameters.Add("@FunctionID", SqlDbType.Int).Value = functionByRole.FunctionID;
                cmd.Parameters["@FunctionID"].Direction = ParameterDirection.Input;


                cmd.Parameters.Add("@RoleID", SqlDbType.Int).Value = functionByRole.RoleID;
                cmd.Parameters["@RoleID"].Direction = ParameterDirection.Input;



                con.Open();
                cmd.ExecuteNonQuery();
                
            }
        }