How to add values into datatable according to indexes

Hello Everyone,
I have a json file which contains nested json array and it has key value pairs like

So here I have to store Mango in datatable at {0,1} position and I have 12 rows and 10 columns like that, I just want to know how to store value according to given indexes

Thanks in advance.


Are you meaning something like this:

First row and second column of datatable, which is already created.

Regards, Gio