full_stack_attributes.js

full_stack_attributes.js

var variation = optimizelyClient.activate("my_experiment", userId, {
  industry: "b2b"
});

And:

optimizelyClient.track("my_event", userId, {
    industry: "b2b"
});

Or, if you’re using Segment to track your KPIs (which you should be):

analytics.track({
  userId:userId,
  event: 'my_event',
  context: {
    traits:{
      "industry": "b2b"
  }
});