What are you trying to achieve?
Lunch campaigns automatically from airtable to meta
Steps taken so far
Hi!
I started the preparation and a scenario:
- connected airtble, prepared fields for launches
- getting marketing api access token
- watch records from airtable
- get null values after running http json
Screenshots: scenario setup, module configuration, errors
Welcome to the Make community!
You cannot map strings directly into another JSON string without escaping (“converting”) them, as the variable might contain characters that have a special meaning in JSON. You’ll need to escape those special characters, otherwise they make the JSON invalid when you map the variable value when creating another JSON string.
You can do this by passing the variable into the JSON “Transform to JSON” module —
Transforms any object (or variable) to JSON.
Then, you can map the output of the “Transform to JSON” module into your JSON string.
For more information, see https://www.make.com/en/integrations/json, and https://www.make.com/en/help/app/json in the help centre.
Alternatively, you can use the built-in function replace
to replace those special characters with their escaped versions. I have provided examples of this all over this forum, you can search for it using my forum profile page.
Hope this helps! Let me know if there are any further questions or issues.
— @samliew
2 Likes
Also, I noticed your variables are empty.
You cannot individually run a single module if you don’t have example values of the “Data”, which you must input into the prompt when you manually run a single module.
Try running the full scenario instead by clicking the “Run Once” button:

For more information, see these duplicate questions previously asked and answered by other community members:
Hope this helps! Let me know if there are any further questions or issues.
— @samliew
2 Likes
Thank you so much!
That really helped me.
Only this issue appears all the time now:
Error: 400 Bad Request
- {“error”:{“message”:“(#100) The parameter special_ad_categories is required.”,“type”:“OAuthException”,“code”:100
Maybe you have possible solutions?
No problem, glad I could help! Looks like your variable is still empty.
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Hope this helps! Let me know if there are any further questions or issues.
— @samliew