Templates / 🧑‍🎓 Test your data access techniques with progressive expression challenges

🧑‍🎓 Test your data access techniques with progressive expression challenges

Ready for 3.0

by Lucas Peyrin ✓ · 2,604 views · created 2025-07-21 · Engineering

Ready for 3.0. This template uses no nodes that n8n 3.0 removes. No removed nodes, versions or helpers found. Static check, last run 2026-10-19.

What this workflow does

This workflow has 33 nodes and runs manually, when you click “Execute workflow”. It uses only n8n's built-in nodes.

How it runs

Trigger: Manually, when you click “Execute workflow”.

  1. Source Data (Edit Fields (Set)): sets 6 fields: name, city, level…
  2. Test - Basic Access (Edit Fields (Set)): sets 1 field: user_city
  3. Check - Basic Access (If): checks a condition and branches into true / false
  4. Error - Basic Access (Stop and Error): stops the run with an error
  5. Test - Array Access (Edit Fields (Set)): sets 1 field: third_tool
  6. Check - Array Access (If): checks a condition and branches into true / false
  7. Error - Array Access (Stop and Error): stops the run with an error
  8. Test - Nested Object (Edit Fields (Set)): sets 1 field: street_address
  9. Check - Nested Object (If): checks a condition and branches into true / false
  10. Error - Nested Object (Stop and Error): stops the run with an error

…plus 16 more steps. See the full node list below.

Before you upgrade to n8n 3.0

Nothing in this workflow is removed in n8n 3.0, so it should import and run after the upgrade.

Nodes used (6)

From the author

How it works This template is a hands-on, practical exam designed to help you master n8n Expressions—the key to accessing and manipulating data in your workflows. If the 🎓 Expressions Tutorial Template was the theory lesson, this is the practical driving…

Excerpt from Lucas Peyrin's description on n8n.io.

View the original on n8n.io → Check your own copy

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