What problem of my store procedure ? can anyone help me to solve my problem thanks a lot.

------------------------------------------------------------
sql Code:
  1. USE [Local Mattress System]
  2. GO
  3. /****** Object:  StoredProcedure [WANSERN\wansern].[SP_LoadProduct]    Script Date: 05/06/2008 15:18:36 ******/
  4. SET ANSI_NULLS ON
  5. GO
  6. SET QUOTED_IDENTIFIER ON
  7. GO
  8. -- =============================================
  9. -- Author:      Chia Chet Shian
  10. -- Create date: 06/05/2008
  11. -- Description: Load Spec Product
  12. -- =============================================
  13. ALTER PROCEDURE [WANSERN\wansern].[SP_CreateViewProd]
  14.     -- Add the parameters for the stored procedure here
  15.     @PCRefNo varchar(50),
  16.     @ProductCode varchar(50),
  17.     @Company_Name varchar(100),
  18.     @Brand varchar(250),
  19.     @Model varchar(250),
  20.     @Prod_Type varchar(50)
  21. AS
  22.     if OBJECT_ID(N'View_ProdList',N'V')IS NOT NULL
  23.     DROP VIEW VIEW_ProdList
  24.     GO
  25.     CREATE VIEW View_ProdList AS
  26.     SELECT  Prod_List.PCRefNo, Prod_List.Product_Code, Prod_List.Company_Name, Prod_List.Brand, Prod_List.Model, Prod_List.Prod_Type,Prod_List.Thinkness, Prod_List.T_Unit, Prod_List.Width, Prod_List.W_Unit, Prod_List.Length, Prod_List.L_Unit, Prod_List.Status, Prod_List.Cost
  27.     FROM    Prod_List
  28.     WHERE Prod_List.PCRefNo = @PCRefNo AND Prod_List.Product_Code LIKE %@ProductCode% AND Prod_List.Company_Name LIKE %@Company_Name% AND Prod_List.Brand = %@Brand% AND Prod_List.Model = %@Model% AND Prod_List.Prod_Type LIKE %@Prod_Type%
  29.     GROUP BY Prod_List.PCRefNo, Prod_List.Product_Code, Prod_List.Company_Name, Prod_List.Brand, Prod_List.Model, Prod_List.Prod_Type,
  30.              Prod_List.Thinkness, Prod_List.T_Unit, Prod_List.Width, Prod_List.W_Unit, Prod_List.Length, Prod_List.L_Unit, Prod_List.Status, Prod_List.Cost
  31. BEGIN
  32.     -- SET NOCOUNT ON added to prevent extra result sets from
  33.     -- interfering with SELECT statements.
  34.     SET NOCOUNT ON;
  35.  
  36.     -- Insert statements for procedure here
  37.    
  38. END