1. On the Results page, click the Filters tab.
2. Click Switch to advanced mode.
3. Type or paste logic into the Custom Filters text field. 
4. Click the Click here to apply filters button to reload the filtered data set, or click Switch to basic mode to go back to the list of traits, answers, and variables.

In the example below, the study will be filtered by aytm's preset age ranges, ensuring the results page is filtered by the respondents' ages. To set this up we use the variable age_range in, then bucket our preset age groups: 13-17, 18-24, 25-34. Put this together and the correct syntax is age_range in '13-17', '18-24','25-34'

Note: Learn more about creating custom age ranges.

While you can build the logic for a filter entirely from scratch, it may be helpful to start with some parameters, and then edit them.

1. In the Filters tab, click the checkboxes on traits or variables, and click the 3-state checkboxes on answer choices to build a base for your filter.
2. Hover over Switch to advanced mode to see the automated logic for this filter.
3. Click Switch to advanced mode to view and edit the logic.
4. Click the Click here to apply filters button to reload your data set with filters applied.

Note: Similar to using logic in the Survey Editor, the system will give an error if you enter a logic string that is not valid. Otherwise, if the logic string is valid the stripe next to the text box will be blue.