adjustable loop knot

[green]

I was reading bite tippet to fly knot and saw bonefishwhisperer using an adjustable loop. Two or three years ago I posted an adjustable loop knot on another site and was wondering if it was the same knot. It's a small easy to tie adjustable loop size knot. It's the first time I've see that some one might be using it. It wasn't a 100% knot until this winter my son purchased some sufix ice magic in 2 lb test. He tried a loop knot and the line broke first. We tried two more times and the line broke each time. Pictures are included.
When finishing knot pull on tag and standing part keeping the loops the same size until reaching the desired loop size. Then pull on hook and standing part to tighten.