Conditional Charting

I have three rows of data with which I would like create a scatterplot with 2 out of the 3 depending on a condition. Regardless of the condition, both charts will use the same Y axis (in this case, row 2). But depending on my decision cell (N4), I want to use either Row 3 or row 4 as my X axis. This seems like an obvious use of an IF statement but that doesn't seem to interact well with the SERIES function. Does anybody have any suggestions? Thanks.