Data table to json with dynamic Index

[HazemSaleh]

I was look at Solved: Data Table to JSON object in PAD - Power Platform Community (microsoft.com)

It work great but i wanted to covert all Datable to json in a specific fromat  but everytime i try to call mytable[0][ColumnName]  it work but
how to have it dynmic but without overwrite my json Object in for each row?