# Need help integrating Gemini API key

**URL:** https://community.thunkable.com/t/need-help-integrating-gemini-api-key/4022674
**Category:** Web API's
**Tags:** beginner, help
**Created:** [July 24, 2025, 9:38am UTC](https://community.thunkable.com/t/need-help-integrating-gemini-api-key/4022674 "2025-07-24T09:38:58Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![truyenthongaz99995xo](https://avatars.discourse-cdn.com/v4/letter/t/49beb7/32.png) [@truyenthongaz99995xo](https://community.thunkable.com/u/truyenthongaz99995xo)
#### Post date: [July 24, 2025, 9:38am UTC](https://community.thunkable.com/t/need-help-integrating-gemini-api-key/4022674/1 "2025-07-24T09:38:58Z")

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![Screenshot 2025-07-24 162601](https://us1.discourse-cdn.com/flex015/uploads/thunkable/original/3X/6/8/683b576a1b4d88b50a14ed6c611c01bfc1c846ff.png)  
 ![Screenshot 2025-07-24 162642](https://us1.discourse-cdn.com/flex015/uploads/thunkable/original/3X/4/c/4c5961d9c077226c9220306bf394f6bcb1f74437.png)  
"**Please help me check if this Web API block diagram is correct? When I hadn’t attached “candidates” → “content” → “parts” → “text” and only attached the `response` to `set label câu trả lời text to` for testing, it returned the following JSON structure: { “candidates”: [ { “content”: { “parts”: [ { “text”: "Here’s something interesting about the universe:  
Most of the universe is missing!** Not in a “lost keys” kind of way, but in a "we can’t directly "

But when I connected all the blocks “candidates” → “content” → “parts” → “text” to `set label câu trả lời text to`, the result returned `null`. I don’t know where I made a mistake. Could you please point out the error and guide me on how to fix it so that the Gemini Web API can work?  
Thank you very much!