Why are my values sorted alphabetically?

If you sort the charts (ascending, descending), your values will be sorted alphabetically (e.g. 1, 123, 2, 213, 5, 54), but you, for example, want a numeric sort (e.g. 1, 2, 5, 54, 123, 213 ). Then it may help to change the variable type to a numeric type (float or integer) in the project backend under Data Sources.