VBA and what to change....

Hi,

I was sent a great link as a solution to my cascading list query that I had and looking at the information and watching the YT video it's exactly what I need. I don't want the combo boxes but more the data validation input part.

The link is https://www.thesmallman.com/blog/202...-3-and-4-layer

I'm struggling with the actual VBA code as it's not an area I'm familiar with at all.

The example on the link is based on 3 columns of data and a 4th column of numbers is added without changing anything from a VBA point.

If I had 6 columns of data is there something in the code that I need to change to expand the range?

I've attached a copy of the code from the attached link.

Thanks!