Use the code below to set a custom filter value from the URL. Change 205 to your View ID, 84 to the ID of the field in the filter, and param_name to the name of the custom parameter in your URL.

Use the code below to populate a dropdown, radio button, or checkbox field with all users of a specific role. This field will store the user's ID number, but it will display the user's display name in the field options. Make sure you select 'Use separate values' in the field options before adding this code. Change 'subscriber' to any user role and change 485 to the ID of the field you want to populate.