I get how create a dynamic name from the lecture but I couldn't do the exercise

Hi! Did you take a look at the 'Solved' version of the exercises, please? We have provided the solution too. Best, Ned

I also had some troubles with that. And after looking it up online I believe this short lesson is not explained well at all. If you look up on Google the & operator and how to concatenate strings in excel it will be much more clear.