Present data in line/bar chart

Hello!
How can I show numerical data from 6 different fields in one line/bar chart? For example, chart proposes data for some months for start, and how can I change values for these months to my variables? I could not find the answer on the forum (it even seems, that this feature doesn’t work yet, but why in this case I see in chart data for a few months?). Or, probably, is there any another way on the Bubble to present data in graphical form?

Yes, I tried plugin “line/bar chart”, but I can only use one field from my data within the menu of it. It means, for example, that if I have in data two variables “evaluation_1” and “evaluation_2” I can show only “evaluation_1” or “evaluation_2”, not both together, and it seems strange.

ah, ok.