JSON Utilities - JSON file written with invalid structure

brouwyka — Mon, 08 Jun 2026 08:50:07 -0000

Hey there! I am currently running into the exact same issue (and have also posted to a similar post here: https://forge.codesys.com/forge/talk/Engineering/thread/c45929e2f1/#e27f).
The JsonData object has all inexes & parent indexes in the way I expect, everything is correctly "linked".
It purely seems that the writer is incorrectly parsing said JsonData, not based on parent & child index, but on something else that breaks it and puts things at the root, instead of the specified parent index.

Did you ever manage to find a solution, or another way of achieving your JSON composing?

I'm currently working on Codesys V3.5 SP19 Patch 7 with IIOT Libraries SL 1.13.0.0, specifically JSON Utilities SL 1.13.0.0 (to send requests to APIs with JSON bodies using Web Client SL 1.13.0.0).

JSONByteArrayWriter problem?

brouwyka — Mon, 08 Jun 2026 08:48:27 -0000

Hey there! I am currently running into the exact same issue.
The JsonData object has all inexes & parent indexes in the way I expect, everything is correctly "linked".
It purely seems that the writer is incorrectly parsing said JsonData, not based on parent & child index, but on something else that breaks it and puts things at the root, instead of the specified parent index.

Did you ever manage to find a solution, or another way of achieving your JSON composing?

I'm currently working on Codesys V3.5 SP19 Patch 7 with IIOT Libraries SL 1.13.0.0, specifically JSON Utilities SL 1.13.0.0 (to send requests to APIs with JSON bodies using Web Client SL 1.13.0.0).

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JSON Utilities - JSON file written with invalid structure

JSONByteArrayWriter problem?