But how is your data configured? If you have a table or found set of 6 records, a number field in that table could have a different x value for each record and this can be selected as your X series of the chart.
The thing is, that the x values are always the same percentages and the graph is meant to display one record only.
Fortunately, I had some help now and was finally able to work it out by using repeating fields, one for each percentage and another set containing the formula revenue * percentage, so I finally got that graph set up.
Repeating fields are rarely the best design option. They became mostly obsolete with the release of Filemaker 3 several decades ago as this is the version that introduced portals and relationships. They still work, just aren't as flexible overall as using a set of individual records, one for each repetition.