Form Field Manager custom fields

Hi, we are using form field manager to create checkboxes for areas of need. That is working. We added the custom fields tags to the email notifications and we can see the designations on the detail of each donation, but the custom fields do not show up in any reports. Is there a way to do this? Was there a different way I should have set this up? We normally export a CSV at the end of each month to get all the information for the month and we need to be able to see what areas were designated without delving into each individual donation. Thanks!