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Use “data” for the actual value — “data.source” only tells you how that value was evaluated, not what it is.

Applies to

  • Integrations
  • Webhooks
  • Marketing Data

Answer

In integrations or webhooks, dynamic data can be passed by clicking the substitution picker (< >) in the UI and selecting the field you want. When choosing a field, you’ll see both “data” and “data.source” options — choose “data,” not “data.source.” The .source attribute represents the method of evaluation (AI, API, Expression, Dynamic Attribution, and so on) rather than the actual data value itself.

Where to go next

Last modified on September 25, 2026