Question How to update relation table using dataadapter?

[witecloner]

Help, i have some problem when updating table using data adapter. i use sqldataadapter. here above my stored procedure code that containing multiple update table.

ALTER PROCEDURE [dbo].[sp_CustomerDetail_Edit]
(
	@CustomerID varchar(10),
	@CustomerName varchar(50),
	@Address varchar(50),
	@City varchar(20),
	@ContactPerson varchar(50),
	@ParentID varchar(10),
	@Operator varchar(10),
	@Modifier timestamp OUTPUT,
	@Jan money,
	@Feb money,
	@Mar money,
	@Apr money,
	@Mei money,
	@Jun money,
	@Jul money,
	@Agt money,
	@Sep money,
	@Okt money,
	@Nov money,
	@Des money
)
AS
BEGIN
	SET NOCOUNT ON
	
	DECLARE @ERR1 int, @ERR2 int

	BEGIN TRANSACTION
	
	UPDATE Customer SET
		CustomerName = @CustomerName,
		Address = @Address,
		City = @City,
		ContactPerson = @ContactPerson,
		ParentID = @ParentID,
		Operator = @Operator
	WHERE (CustomerID = @CustomerID) AND
		  (Modifier = @Modifier);
		
	SET @ERR1 = @@ERROR
	
	UPDATE CustomerTarget SET
		Jan = @Jan,
		Feb = @Feb,
		Mar = @Mar,
		Apr = @Apr,
		Mei = @Mei,
		Jun = @Jun,
		Jul = @Jul,
		Agt = @Agt,
		Sep = @Sep,
		Okt = @Okt,
		Nov = @Nov,
		Des = @Des
	WHERE (CustomerID = @CustomerID) AND
		  (@ERR1 = 0);
	
	SET @ERR2 = @@ERROR
	
	IF @ERR1 = 0 AND @ERR2 = 0
	BEGIN
		COMMIT TRANSACTION
		PRINT 'SUCCESS'
	END
	ELSE
	BEGIN
		ROLLBACK TRANSACTION
		PRINT 'FAILED'
	END
END

I have try to execute this stored proc through SQL Server Management Studio Express Edition. But i just can update customertarget table and i can not to update customer table. there is some problem in my code?
Please tell me how to use data adapter using that stored procedure?

Thank you