I'm at a loss here. I already have A and B visualized as "single values". The only thing that is missing is the calculation of A-B. I've tried modifying your code to something that looks like it might make sense. Here I'm trying to reference the searches that are used to visualize A and B. (Access search results ormetadata). | stats values($<All requests>$) AS A values($<All responses>$) AS B | eval C=A-B   ... View more