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Replace a value in Json file

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Posted on by dzaniboni

Hi all,

I'm trying to replace a value in a Json file, but I don't find any example or documentation for AL Language. I've the following structure file:

{ /codeunitId/: 18121808,/functionName/ : /PrintDocMaya/,/parmInput/: [{/name/: /pDocumentType/,/value/: /1/},{/name/: /pDocumentNo/,/value/: /102046/},{/name/: /pFilePath/,/value/: /C:////Temp/////}],/parmOutput/: [{/name/: /Return/,/value/:/0/}]}

I would like to replace value /0/ from parmOutput for the element with name /Return/. How could this be done?

Thank you for your kindly replies.

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Mohamed Amine Mahmoudi 26,441 Super User 2025 Season 2 on at

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Hi dzaniboni

I hope this can help you and give you some hints.

Create a JSON File with AL : https://www.dvlprlife.com/2022/12/dynamics-365-business-central-create-a-json-file-with-al/

Read a JSON File with AL : https://www.dvlprlife.com/2022/12/dynamics-365-business-central-read-a-json-file-with-al/

Best regards,

Mohamed Amine MAHMOUDI

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dzaniboni 16 on at

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Hi Mohamed,

thank you for your reply but I'm able to create (from 0) or read a Json file. What I want is to know how to replace or modify an existing Json file (single values or properties).

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Gerardo Rentería Ga... 25,360 Most Valuable Professional on at

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Hi

In systemapplication is this code, i hope this can help you.

BR

Gerardo

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dzaniboni 16 on at

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I develop this solution:

create new Json Object for the section of the original Json object that I want to replace.

Create new Json Array to store in a Json array the new results for the outputParm section.

Add in the new Json Object the new keys and values

Add the new Json Object in the Json Array

Replace the Json array for the specific key (that's an array)

Below the code:

OutputJObject.Add('name', 'Return'); OutputJObject.Add('value', O_DocFileName); OutputArray.Add(OutputJObject); JObject.Replace('parmOutput', OutputArray);

Hope this you can help.

DZ

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