How to select two specific columns?

Hi All,

I want to creat a XYScatter chart with two columns data, but between the two columns there are still several columns with other data. So my question is  how to select those two specific columns. For the "XL Chart & Graph" component there are only "Origin" and "Bound", I do not know how to define a range like what I have ment.

Hopefully there is a solution.