im trying to create a user defined function, but cant execute it as an error message appears

when trying to run an sql 2005 user defined function, it wont execute as the following error message occurs:

Msg 443, Level 16, State 15, Procedure InsertMailingPreferences, Line 60
Invalid use of side-effecting or time-dependent operator in 'INSERT' within a function.

How do i resolve this?

THanks

Julia

USE [MembershipDB]
GO
/****** Object:  UserDefinedFunction [dbo].[getUpgradeProductIdInPackage]    Script Date: 10/27/2008 14:09:44 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
create FUNCTION [dbo].[InsertMailingPreferences] (
			
			@PackageID int,
			@AddressID int,
			@UserName nvarchar(100)
								
			)
returns nvarchar(50)--int	
as
BEGIN
 
 
DECLARE @Counter int
SET @Counter = 0
 
DECLARE @TotalRows int
DECLARE @ServiceID int
DECLARE @MailingMethodID int
DECLARE @MaxServiceID int
DECLARE @NowDate datetime
--------------------------------------------------------------
DECLARE @DefaultMailingsTable	table
(
		ServiceID int,
		ServiceName nvarchar(50),
		DefaultMailingMethodID int,
		MethodDesc nvarchar(50)
		)
 
 
--SET @DefaultMailingsTable = dbo.getDefaultMailingPreferencesForPackage(@PackageID)
--SET @DefaultMailingsTable = (SELECT * FROM dbo.getDefaultMailingPreferencesForPackage(@PackageID))
 
Insert Into @DefaultMailingsTable
SELECT * FROM dbo.getDefaultMailingPreferencesForPackage(@PackageID)
 
SET @TotalRows = (SELECT Count(*) FROM @DefaultMailingsTable)
SET @MaxServiceID = (SELECT Max (ServiceID) FROM dbo.getDefaultMailingPreferencesForPackage(@PackageID))
 
 
WHILE (@Counter < @MaxServiceID+1)
BEGIN
 
--Select ServiceID, DefaultMailingMethodID FROM @DefaultMailingsTable WHERE   exists
--		(Select ServiceID, DefaultMailingMethodID FROM @DefaultMailingsTable WHERE ServiceID = @Counter)
 
	If  (Select ServiceID FROM @DefaultMailingsTable WHERE   serviceID in  (@Counter)) is NOT null
		--(Select ServiceID, DefaultMailingMethodID FROM @DefaultMailingsTable WHERE ServiceID = @Counter)) = @Counter -- is not null
 
	BEGIN
	Set @ServiceID = (Select ServiceID FROM @DefaultMailingsTable WHERE ServiceID = @Counter)
	Set @MailingMethodID = (Select  DefaultMailingMethodID FROM @DefaultMailingsTable WHERE ServiceID = @Counter)
	Set @NowDate = getDate()
--convert(datetime,getDate(),103)
 
 
 
 
	
	INSERT INTO dbo.MailingUserPreferences(UserName, DateSelected, MailingMethodID, AddressID, ServiceID)
	VALUES(@UserName, convert(datetime,24/05/2008,103),  1, @AddressID, @ServiceID);
	SET @Counter = @Counter + 1	
	END
 
	Else 
 
	Begin
	SET @Counter = @Counter + 1	
	end
 
 
 
 
END
 
 
 
 
Return 'Success'
--Return @PackageID
 
 
 
 
END

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