{
  bulkCallbackV2: function(treatments) {
    if (!window.heap || !window.heap.track || !treatments || !treatments.length) return;

    treatments.forEach(function(t) {
      window.heap.track("coframe_treatment_applied", {
        cf_user_token: t.coframe_user_token,
        cf_variant_id: t.coframe_variant_id,
        cf_variant_slug: t.coframe_variant_slug,
        cf_experiment_id: t.coframe_experiment_id,
        cf_experiment_slug: t.coframe_experiment_slug,
        cf_impression_id: t.coframe_impression_id,
        cf_is_global_holdout: String(t.coframe_in_global_holdout),
        cf_is_baseline: String(t.coframe_in_exp_baseline),
      });
    });
  }
}

# Heap

Send Coframe treatment events to Heap using a bulkCallbackV2 snippet.

Coframe tracks a `coframe_treatment_applied` event in Heap for every treatment a visitor receives, letting you analyse experiment assignments alongside the rest of your Heap data.

## Add this bulkCallbackV2 to your analytics callback

JS



```
{
  bulkCallbackV2: function(treatments) {
    if (!window.heap || !window.heap.track || !treatments || !treatments.length) return;

    treatments.forEach(function(t) {
      window.heap.track("coframe_treatment_applied", {
        cf_user_token: t.coframe_user_token,
        cf_variant_id: t.coframe_variant_id,
        cf_variant_slug: t.coframe_variant_slug,
        cf_experiment_id: t.coframe_experiment_id,
        cf_experiment_slug: t.coframe_experiment_slug,
        cf_impression_id: t.coframe_impression_id,
        cf_is_global_holdout: String(t.coframe_in_global_holdout),
        cf_is_baseline: String(t.coframe_in_exp_baseline),
      });
    });
  }
}
```

## Where to place it

Place the snippet above inside your Coframe analytics callback as described in [Tracking Settings](../docs/tracking-settings.html).

## What gets sent

Each call passes the `coframe_*` fields from the treatment object as event properties. These fields are described in [Experiment Assignment & IDs](../docs/experiment-assignment.html).