large bedroom horizontal blinds (Kirkley NR33)

These are 1640 mm wide by 1560 drop. The string is broken so you can raise the blinds up but you can’t keep them up without some sort of hook or if you know how to fix it. We had the blind replaced as the manufacturer sent a new one so this one is spare. I’ve taken a pic of the one we’ve still got up so you can see the style of it. Hopefully someone can use this?