Architect Data Action: Mapping nested JSON response to custom variables

Architect & Flows
1

Trying to figure out the right way to map a nested JSON response from an external REST API into Architect variables using a Data Action. I’ve got the HTTP request step working fine, getting a 200 OK back, but when I try to assign the data, it’s not populating the variables correctly.

Here’s the response payload structure:

{
 "data": {
 "customerName": "Test Corp",
 "tier": "Gold"
 }
}

In the Data Action JSON, I’m using this mapping:

"data": {
 "customerName": "{{data.customerName}}",
 "tier": "{{data.tier}}"
}

But the variables stay null after execution. Am I missing a step in the mapping syntax or is there something else I need to configure in the Data Action definition?