Best way to exclude certain Support Groups from Incident Survey?

Hi all,

I've been asked to implement Incident Survey. So far I've got a fairly straightforward calculation setup for the Precondition. Frequency has been set at 2 for testing only.:

import System

static def GetAttributeValue(Incident):

  Frequency = 2

  DoSurvey = false

  if (Incident.RaiseUser._FullName != null) and (Incident.RaiseUser._DoNotSurvey != true):

      DoSurvey = (Incident.Id % Frequency == 0)

  return DoSurvey

I've been asked to exclude the Resolving Support Group where a flag has been set.

I've added a Boolean attribute to System / Support Group object, which can be set on or off from within User Admin for the group.

However, I'm struggling to find the placeholder / reference I need to put that into the calculation into the Precondition.

When entering the calculation in the PreCondition and looking at the Resolutions[] collection I'm not seeing the DoNotSurvey flag in Create Group or Update Group.

Any advise would be most welcome.