MDX no transaction in the last 2 years

Hi

What I'm trying to do is a set, which retuns me only the items that don't have transaction over the last 2 years.

My Data is as follows:

- there's a measure called TransactionCount

- an ItemDimension and a TimeDimension

So I need all Items that have 0 or Null TransactionCount over the last 2 years

What I have so fat is this:

([Measures].[TransactionCount],PERIODSTODATE([Date].[YEAR].[(ALL)],[Date].[YEAR].&[2013].LAG(2)))on 0,

FILTER

([Items].[Items].MEMBERS,

[Measures].[TransactionCount]<1)

on 1

from

InventoryAudit

this returns me only those that don't have a transaction at all. There are some, that didn't have any over the last two years, but earlyer.

Thank you for any help

Lukas