declare @dbname varchar(500),@del varchar(500)
begin
set @dbname='"D:\Program Files\Microsoft SQL Server\MSSQL\BACKUP\ACS\ACS_AutoBackup_db_'+convert(varchar(10),(replace(convert(varchar(10),DATEADD(day, -3, getdate()),120),'-','')))+'.bak"'
--select @dbname
set @del='del '+@dbname
--select @del
exec master.dbo.xp_cmdshell @del
end