Show / Unhide specific sublayer (with name)

[AntonioPacheco]

Hello all, can anyone help me

I am trying to unhide/show a specific sublayer using it's name but I always get the message:

"Eval Error (#1302): "No such element" in (hid this part for safety) ( [17:undefined] in host 'illustrator-26.064 (main)'.

here is the code

var doc = app.activeDocument;

app.executeMenuCommand('selectallinartboard');

app.executeMenuCommand('group');

var mesaActiva = app.activeDocument.artboards.getActiveArtboardIndex ();

doc.artboards.setActiveArtboardIndex(mesaActiva);

app.executeMenuCommand('selectallinartboard');

app.executeMenuCommand('cut');

var NewLayer = doc.layers.add();

NewLayer.name = "Center Top";

app.executeMenuCommand('paste');

to_center(doc.artboards[mesaActiva], app.selection[0]);

app.executeMenuCommand('selectallinartboard');

doc.selection[0].translate(249.2979,438.1053);

var myLayers = doc.layers;

for (var i=0; i<myLayers.length; i++) {

    if(myLayers[i].name=='Guides'){

        for (var l = 0; l<myLayers.layers.length; l++) {

            if(myLayers[i].layers[m].name=='G_Left_Chest_Top'){

                myLayers[i].layers[m].visible=true;

            }

        }

    }

    else{

        alert('Not found');

    }

}

//center on artboard

function to_center(artboard, item){//recibe un id de mesa y un item a centrar

    var artboard_x = artboard.artboardRect[0] + artboard.artboardRect[2];

    var artboard_y = artboard.artboardRect[1] + artboard.artboardRect[3];

    var x = (artboard_x - item.width)/2;

    var y = (artboard_y + item.height)/2;

    item.position = [x, y];//coloca item en posicion

}

[AntonioPacheco · Accepted solution]

I have been hours looking around and finally found aswer, by: @ellewong 

https://community.adobe.com/t5/illustrator-discussions/how-to-select-sublayer-group-by-name/td-p/118...