Chart Maker help please

I think I'm not clever enough to figure out how to implement those examples to my case.
Suppose that I want to graph numbers 5 to 100 in x axis and X*2 in y axis. As I tried in this block:


Whats wrong with creating the list?
The list is not created as expected and I get error message while creating the list (not yet drawing the chart )
Could you pls write down the block to make the list that is suitable to use in chart maker?