How to check certain segments checked based on their location with QA Checker 3.0

Question

I'd like to apply a length restriction rule only to a specific JSON entry with a unique JSON path. When I set up the parser rules, I defined the JSON strings without length restrictions as paragraphs and the JSON string that has a length restriction as a keyword list.

According to the documentation:

Check the following contexts only (one per line) - If you only want to check certain segments checked based on their location in the document structure, you can specify here what exactly should be checked.

So what exactly do I need to enter in the text box under Check the following contexts only (one per line)?
(I tried both Keyword List and sdl:keywords, but it had no effect.)

Typos fixed
[edited by: Hans Kröger at 9:00 PM (GMT 1) on 7 Jun 2022]

Oana Nagy · Answer

Hans Kröger I must admit when I saw this question about JSON | length restriction | context - I have a moment of shock / fright as it's not often I see such requests. 
 If my what should be "young brain" serves me well, I maybe able to hep based on my accumulated experiences to help as I am sure in all my years of support / consultation with other file types like XML I've manged to implement such QA. 
 But I would appreciate to put my efforts in the right context. Please may I have an example JSON file with just a line or two of string - by which you want size restriction against context. 
 Any details and clarifications would also be appreciated It my be that I could offer support this this using other QA tools & applets. 
 Looking forward to your file 
 Lyds

Trados Studio > 1. Trados Studio

How to check certain segments checked based on their location with QA Checker 3.0