Thank you very much, Sam. This worked and I would not have been able to figure it out on my own, ever.   Ideally, though, I wanted a page, or possibly a report, drop-down list with overlapping values. But it seems that these "advanced filters with parameters" only work at the object level? When I moved the filter to "page control" -- which is an option -- it behaved strangely and on objects where I had not created a filter. [You had said, "It must NOT be placed in the page prompt area or report prompt area", and that appears to be good advice.]   So the filter worked perfectly for filtering my one object. However, I would like this same filter to work on lots of objects/pages. So, I wondered, do I need to create the same filter for each object, or is there a way 1) to copy this filter to other objects; or 2) to use this filter as a page or report control?   ... View more

Thank you ghosh for this super helpful reply.   For anyone with a similar issue this is a great tip sheet also https://support.sas.com/rnd/app/ODSGraphics/TipSheet_GraphStyle.pdf   It addressed 2 related issues I was having, 1) I didn't know what style sheet I was using with sgplot; and 2) the info I needed was in the "parent" style not the style I was using   proc template; source styles.pearl / expand;*style & parents; run;   ... View more