who knows how I can change the color of legend? At the attached example you see that a color is connected to a change reason. But the connection will be done automatically. I would like to determine a color to a specific reason.
First load a new link table with the reason (linked to your data reasons) and three fields e.g. R,G and B. The values in these fields should correspond to the desired RGB values. Then in the backgound color of your expression (click on the + before the expression to expand the attributes) use
The Dimension Reason should be included in the chart