I did this filter , and tested also.No result. This will hide in LOB , not in new used.
If we keep two filters like LOB is not null and Newused is not null then report will display blank page.
Why it is not working is::
Null records are coming in two dimensions i..e, New , and line of business.
And hence both the condition satisfies and the report coming is blank.
And i tried with Boolean variable also same result.