MsSQL Server Stored Procedure, declare variable and cursor recordset

How do set variable and set value variable in MsSQL Server Stored Procodure? let’go to these example :

USE [dbname]
GO
/****** Object:  StoredProcedure [dbo].[sp_importCust]    Script Date: 12/01/2011 22:30:33 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO

ALTER Procedure [dbo].[sp_importCust]
@parSessionID VARCHAR(16)


AS

DECLARE
@cif  varchar(255),
@cust_name     varchar(255),
@join_date     varchar,
@sales_code     varchar(255),
@sales_name     varchar(255),
@cust_type     varchar(25),
@sol_id     varchar(5),
@bu varchar(100),
@bool numeric(10)


SET NOCOUNT ON
/*– declare the cursor*/

DECLARE Cust CURSOR FOR
SELECT    cif, CUST_NAME,join_date,sol_id,sales_code,sales_name,bu,cust_type FROM tbl_cust_tmp
where session_id=@parSessionID

OPEN Cust
FETCH Cust INTO @cif, @cust_name,@join_date,@sol_id,@sales_code,@sales_name,@bu,@cust_type
WHILE @@Fetch_Status = 0
BEGIN
set @bool=0
set @bool = (select COUNT(*) from tbl_cust
where CIF=@cif)
if @bool < 1
insert into tbl_cust(cif, CUST_NAME,join_date,sol_id,sales_code,sales_name,bu,cust_type,inputter)
SELECT   cif, CUST_NAME,join_date,sol_id,sales_code,sales_name,bu,cust_type,session_id FROM tbl_cust_tmp
where session_id=@parSessionID and CIF=@cif

update tbl_cust set
CUST_NAME=@cust_name,join_date=@join_date,sol_id=@sol_id,
sales_code=@sales_code,sales_name=@sales_name,bu=@bu,cust_type=@cust_type
where CIF=@cif

FETCH Cust INTO @cif, @cust_name,@join_date,@sol_id,@sales_code,@sales_name,@bu,@cust_type

END
delete from tbl_cust_tmp where SESSION_ID =@parSessionID
CLOSE Cust
DEALLOCATE Cust

return
end

starting declare variable:

DECLARE
@cif  varchar(255),
@cust_name     varchar(255),

you can set value in variable with this code:

set @bool=0

set cursor recordset

OPEN Cust
FETCH Cust INTO @cif, @cust_name,@join_date,@sol_id,@sales_code,@sales_name,@bu,@cust_type
WHILE @@Fetch_Status = 0