How to transfer list of list between js and jsx in Indesign panel?

And this above does not work.

By @livl17017666

Ok but what does this return:

csInterface.evalScript(script, function(message){
console.log(message);
});

What is it in your debugger?

Is your function even called? Easy to check:

JSX side:
alert("trying to load json_p");
#include "json_p.js"
alert("JSON is "+(typeof JSON));

function listTransfer(inpuList){
alert("I am called");
var listOfLists = JSON.parse(inpuList)
alert("listOfLists is of type:" + (typeof listOfLists));
return listOfLists

}

At the moment, you can already investigate to find the root of your problem.

var xlsf = File.openDialog("Please Choose an Excel file");

alert("Contents of row 2 cell 3: \r" + getExcelArray(xlsf)[1][2]);

/**
* Converts an Excel table into a nested array 
* @ param the Excel file path 
* @ return a nested array for the table 
*/

function getExcelArray(xf){
    var doc = app.activeDocument;	
    var temp = doc.pages[0].textFrames.add ({geometricBounds: ["0pts","0pts","1000pts","1000pts"], textFramePreferences: {ignoreWrap: true,}});
    try {
        temp.place(xf);
        var xta = temp.parentStory.tables[0].rows.everyItem().contents; 
    }catch(e) {
        temp.remove()
        alert(e)
    }  
    temp.remove();
    return xta;
}

Hi @livl17017666 , This thread might help—script to convert an .xls table into a nested array. See @Peter Kahrel ’s simplified code at the end:

https://community.adobe.com/t5/indesign-discussions/how-to-use-xlsx-extendscript-js/m-p/13782669#M52...