Need help to make a graph (logic)

[TIMAI2]

That doesn't really show what values you want to show....

Could I also suggest that you use the ChartMakerPlus extension, it is meant to be easier to use, and offers more features/customisation.

[Free] ChartMakerPlus - an extension to make google charts

1. Introduction The original and popular Chartmaker extension has been in use by AI2 developers for years, and has provided a quick method to generate simple charts for pie, bar or line. This extension is a complete rewrite of the original, builds on what was there, and offers many new features: two new charts: column and table a boolean to turn zoom on and off exposes the ability to add other options simplifies data compilation - straightforward and user-friendly lists of lists returns sele…