Insert frame into header

I’m trying to link a frame in a header to a frame along the left side so I can have recurring line numbering with a line (pleading paper). I saw this suggestion and it seemed so straight-forward. I have no problem linking frames but can’t seem to get a frame to “take” within a header. Maybe it’s something simple that I’m overlooking but I’ve spent hours on this, literally. Suggestions? Using on Fedora.Thanks.

Found the answer: just needed to create the frame, cut and paste it into the header anchored to the paragraph.