Chart Widget - Labels for Y Scale

I have a question about the “chart” widget. The display and configuration works without any problems.
However, since my values are quite small (between 0 and 5), I have multiplied them by 10 and scaled the maximum by 10 above the largest value. So everything is easily recognizable.

But I would like to label the Y-axis with the original values. But the value scaled with 10 is always displayed. For X I have put the weekdays in labels underneath.
Can I set the values for Y manually so that the values are displayed with a comma or decimal places?