Having a problem filtering

I am trying to filter my search result in order to exclude container documents from my results.

I thought the best way would be to filter according to the document template, so I have tried both the template name and the ID, but neither seem to work:



Should this work?

I’m using 1.8.1 - I tried the latest version but got a parse error.

I was hoping to get this working so it was dynamic, but it looks like it’s not going to work. What I’ve done though is just include a tv for &parents on the search result page which does the job.