Code VBA avec randbetween

Bonsoir svp quelquun peut il m aider avec la partie en gras souligne

exercise 2.6:

Generate a list of 20 numbers between 1 and 100 using the Excel function RANDBETWEEN. Select these numbers and copy them (by value) to

another column (the reason for this is that RANDBETWEEN updates the

list each time an operation is performed in the spreadsheet). Write a VBA

program to input the copied numbers and sort them into descending order

using bubble sort. Output the sorted numbers to the spreadsheet. Be sure to

give an error message if no numbers are entered.