Is it possible to create a graph of variable set of cells?

[excelos]

Hello!

I want to make a graph that one of the lines is formed of the data of a range of cells.
However, this range of cells may change with updates. For example, I would like the line to be formed from the GREY cells of a line, so that when I grey more cells, the line will update.

Is that possible?

Thanks!

 

[excelos]

OR cells in a range that do not contain a formula?
Or you do have any idea for another strategy?

Thanks!