I just wonder whether the result is a bug or not. Could you please confirm whether it is or not? otherwise, we have to modify our service.
I used Campagin criterion service @ v4.1 and then I have got the result value that 0 only using -100 on by GoogleAds UI.
Today, we updated our service to v6 but found the problem that the value was 0 without any amendment ourselves.
If you require further information such as our customer ID or Campaign ID, please let me know then I will provide it.
Please reply promptly.
Thanks