The picture above shows what the snapped cord looks like.
Can you see a zip tie in the picture above? It's just barely showing under the white shaft. I'm holding the broken cord to the left. (This can be cut away now.)
I had to buy a whole bag but really just one is enough. It slides up and down fairly easy.Maybe it's hard to see from the picture I show above because the shaft of the umbrella falls over most of it. But, it works great.
The bag cost inder $5. and I have used them for other jobs as well.
I hope this post will make somebody happy.