Hi and welcome to JMP! Looking at the data you provided, I think the only thing keeping you from making the graph is that your "log(I)" formula column is listed as Nominal. If you click the red icon to the left of the column name and select "Continuous," then the graph should work as you're expecting.
Also, assuming you're looking to calculate the log base 10 of the absolute value of the "I(A)" column, then you're using the formula function correctly.