Create Exif height/width tags from image data?

[bob]

I'm sure I should have been able to figure this out, but I'm a bit lost and not particularly adept with code, so I apologize.

The operation I want to do on my photos is very simple (at least it seems like it should be):

I want to create ExifImageHeight and ExifImageWidth tags based on each file's ImageHeight and ImageWidth.

I feel like it should be as simple as

exiftool -exifimageheight=imageheight -exifimagewidth=imagewidth image.jpg

but that obviously doesn't work.

Is there a way to reference a picture's imageheight / imagewidth within a single command or do I need to make a batch file or go way down the rabbit hole on this?

Thanks

[Phil Harvey]

Very close.  You're just falling prey to common mistake 5c.

- Phil

[bob]

Ah, wonderful. Thanks so much!