How to increment a field with JSON input?

Hello all. I'm having some trouble with the JSON input field , i have read all the documentation i can find yet this script does not work either syntactically , runtime error or compilation error

"script" : 
"source": """
    int i = 0;
	    doc['id'].value - doc['id'].value + i;


Basically what i want is to increment the last field of this data table by 1 for every row


Thank you

Advanced JSON doesn't allow you to add inline scripts. You could create a scripted field with the code from inside your script and see if that fits your needs.

Thank you for your insight. It worked with the scripted fields. :slight_smile:

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