Report pagination on grouping

I have a simple report containing a table. The table data key is a named query that is a simple select query on a single table. I am grouping the table on one of the columns by adding the data key in the grouping on the table. The column is 'Line'. For each line I would like to have a separate page in the report. According to the documentation, I should be able to check the 'Page Break' option for the grouping to accomplish this. I am unable to get this to work when I preview the report. Am I missing something else here?

Version I am running is 8.1.8.