Start with a New report
Select the Historical - Custom Pollers
In the select fields tab the add fields menu provides access to all Custom Poller related fields.
The filter results tab also has the same options
I have a varchar output from a Universal poller (the serial number of the device is queried), however wehn I follow the above procedure I dont get the value of the serial number, just the name of the custom poller (Serial_Number) for every device. The reports dont work in putting out the data I expected.
Not sure how much this helps but if you are using a Custom Poller that is collecting a Serial Number that value is likely getting stored in the CustomPollerStatus table in the Status column.