Multi select table running REST-API

I have a table1 with data sourced from REST-API GET.
I then want to select a row "tick box" and use the "user" and "udid" column within that selected row using these fields to run REST-API POST for each chosen line.
It works single lines but not multiple-selected-lines.

When table1 has multi-selected rows, I can see the correct values mapped by using [0] then [1] etc, however not clear how I then scale this to run POST API for each selected line pulling the "user" and "udid" fields each time.

Hey! Just want to link to this thread where it looks like your question is being answered!