Tax Liability Report Question

On invoices there is a tax check box on the inventory line item. I want to run a report that shows if that check box was checked or not but only within one state/counties in that state and only between certain dates.

I created a tax liability report and I found that there was a column I could create that showed taxable (line) and I was wondering if this is the same thing that I described above. I also applied a date filter and a tax item equal to all the counties I needed.

However when I run the report it lists invoices that do have the checkbox already checked so the data doesn't match up.