Total for numeric column in Status bar

How do I show Total number on the Status Bar for any displayed column which is pure numeric.

e.g. Finally, I have got page count for PDF files to display (after I installed PDF-XChange Viewer, PDFPageCount.vbs script started working).

I will like to display total number of pages across all PDF files in the folder similar to the display for total size or total duration for audio or video files.

There isn't a way to do that for the page count column, at least currently.