External tags are no new, but typically you can only have one per flow. It's a singular external tag, you can update it throughout the flow, but by the end of the flow you will only be able to visualize the last external tag in the GCloud interactions UI.
Participant Data attributes have no real native way visualizing them in the UI. It's a short fall at the moment. PureInsights AppFoundry reporting add-on as well as others have the ability to do this, but again not an easy native way.
There is an export option in the interactions view to export with custom attributes. but it will be all the attributes for the whole IVR and not just the IVR/Virtual Agent.

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Steve Alix
EDCi
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