since the part producing the warning is a Python script (or step), you can in this Python script save a value in the scenario variables, and use that variable in the condition for the reporter. Indeed, the "outcome" variable used in the condition for reporters is only an example. All variables available to the scenario can be accessed there.
from dataiku.scenario import Scenario
You can use a condition:
foo == 'bar'
I have been looking for a solution for this problem and wasted a lot of time, I looked everywhere in the Dataiku documentation version 6.0 for this snippet of code but couldn't find it anywhere.
It'd be really helpful if you could you share where you got it from because apparently i haven't been looking in the right place.