Interactive grid multi select row

User_HP90X

I would like to save the values to items in a comma-separated manner when multiple lines of Ig are selected.

The current specification saves the first and second items in columns 1 and 2 when a single row is selected.

if(this.data.selectedRecords[0] ! =null{

selectedRecord =this.data.selectedRecords[0][0]+

this.data.selectedRecords[0][1];

$s('P1_ITEM',selectedRecord);

The contents of P1_ITEM are 01banaa

What I want to do is to make sure that when I select three rows, the contents of the item 

01banana,02pine,03orange

It will look like this.

This page is similar to what I want to do

https://www.foxinfotech.in/2019/10/oracle-apex-interactive-grid-get-selected-rows-example.html