When I use the Set Role operator, I set the parameter to a valid attribute in the example set, but I still get an error complaining that I did not. Any idea why this is happening? Is this a bug in Set Role?
you will notice that the process runs fine when executed. This is due to the fact that the metadata is not perfect. Sometimes it's not possible to know what the metadata will look like without actually executing the operator. In these cases when you are sure the value is correct at runtime, just ignore this "error". We will improve this in future versions to be less confusing.