Welcome to the Make community!
Try using the JSON “Transform to JSON” module:
Transforms any object to JSON.
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 join
e.g.:
["{{join(2.array; """,""")}}"]
For more information, see the Array functions page in the Make Help Centre, which covers the following:
- add (array; value1; value2; …)
- contains (array; value)
- deduplicate (array)
- distinct (array; [key])
- first (array)
- flatten (array)
- join (array; separator)
- keys (object)
- last (array)
- length (array)
- map (complex array; key;[key for filtering];[possible values for filtering separated by a comma])
- merge (array1; array2; …)
- remove (array; value1; value2; …)
- reverse (array)
- shuffle (array)
- slice (array; start; [end])
- sort (array; [order]; [key])
- toArray (collection)
- toCollection (array; key; value)
Hope this helps! Let me know if there are any further questions or issues.
— @samliew
P.S.: Investing some effort into the Make Academy will save you lots of time and frustration using Make.