Sql - Conversion Failed When Converting The Varchar Value 'Blue Color' To Data Type Int

I am trying to create stored procedure that gone return varchar value, and that value I need to display in textbox.This is the code for stored procedure:

Create PROCEDURE Status @id_doc int, @Name varchar(50) OUTPUT
AS
select @Name =items.name
from Doc,Items where @id_doc=IDN and doc.IDN=Items.ID
return @Name

This is the code in vb.net where i need to display returned value from procedure in textbox:

Public Sub Current()
Dim dtc As New Data.DataTable
Dim dr As SqlClient.SqlDataReader

[code]....

When I try to execute this code I get this message in exception:

"Conversion failed when converting the varchar value 'Blue color' to data type int."