I defined a report parameter in which it is possible to select multiple values.
Now I want to use the selected values to filter the data displayed in the report. However, I do not know how to define the filter (note that I do not have a problem using a single value as a filter value).
It works! I do not know what I did wrong previously. Maybe I thought before it did not work because it did not report a value when I did not select a value at all in the report parameter.