Dialog vs palette

Question

How do I change a text in Illustrator using a window type PALETTE when using DIALOG PALETTE works but with no, someone can explain me why?
my script is...
#target Illustrator
var sourceDoc=app.activeDocument;
var myMaterials = ["FILME POLIÉSTER HOLOGRÁFICO", "FILME BOPP METALIZADO","FILME BOPP BRANCO","PAPEL COUCHÊ", "PVC PLANO"];
var myWin = new Window ("dialog","Materiais");
myWin.orientation = "row";
myNewList=myWin.add ("dropdownlist", undefined, myMaterials);
myNewList.selection = 0;
myOkButton=myWin.add ("button", undefined, "Ok",{name: "ok"});
myCancelButton=myWin.add ("button", undefined, "Cancelar",{name: "cancel"});
myNewList.onChange = function () {
    var item=myNewList.selection
    var myTextFrame = sourceDoc.textFrames.getByName("MATERIAL");
    myTextFrame.contents=item;
myWin.show ();

Answer 1

I have this script that I created from other examples, but I am unable to make a specific text is changed according to the selected radiobutton, can someone help me, I made numerous unsuccessful attempts here
#targetengine main
#target Illustrator
var sourceDoc = app.activeDocument;
var aFile = File ("~/Desktop/FORMS/clientes para dropdown.csv");
aFile.open('r');
var txtFile = aFile.read();
aFile.close();
var iText = txtFile.split("\n");
var myClients = []
for (i=1; i<iText.length-1; i++) {
    var newElement = {};
    newElement=iText[i]
    var txtCliente = newElement.replace( /"/g, "" );
    myClients.push(txtCliente)
function executar(valor){   
    var sourceDoc=app.activeDocument;
    var myTextFrame = sourceDoc.textFrames.getByName("MATERIAL");
    myTextFrame.contents=valor;
function executarClient(valorClient){   
    var sourceDoc=app.activeDocument;
    var myTextFrame = sourceDoc.textFrames.getByName("CLIENTE");
    myTextFrame.contents=valorClient;
var myMaterials = ["FILME POLIÉSTER HOLOGRÁFICO", "FILME BOPP METALIZADO","FILME BOPP BRANCO","PAPEL COUCHÊ", "PVC PLANO"];
var myWin = new Window ("palette","Dinamic Form");
//myWin.onShow = function () {myWin.size = {width: 500, height: 300}} // tamanho da janela
myWin.orientation = "row";
var myDropdowm = myWin.add('group');
myDropdowm.orientation = "column";
myDropdowm.alignment = "top";
var grpMat=myDropdowm.add('group');
    grpMat.alignment = "right";
    grpMat.add ('statictext', undefined, 'Materiais: ');
    var myNewList=grpMat.add ("dropdownlist", [0, 0, 220, 19], myMaterials);
        myNewList.selection = -1;
myNewList.onChange = function () {  
    var mensageiro = new BridgeTalk();
    var opcao = String (myNewList.selection);
    mensageiro.target = "illustrator";
    var mensagem = "executar('" + opcao + "')\n" + executar.toSource();
    mensageiro.body = mensagem;
    mensageiro.send();
var grpClient=myDropdowm.add('group');
    grpClient.alignment = "right";
    grpClient.add ('statictext', undefined, 'Clientes: ');
    var myNewListClient=grpClient.add ("dropdownlist", [0, 0, 220, 19], myClients);
        myNewListClient.selection = -1;
myNewListClient.onChange = function () {  
    var mensageiroClient = new BridgeTalk();
    var opcao = String (myNewListClient.selection);
    mensageiroClient.target = "illustrator";
    var mensagem = "executarClient('" + opcao + "')\n" + executarClient.toSource();
    mensageiroClient.body = mensagem;
    mensageiroClient.send();
var bobinamento_group = myWin.add ("panel");
bobinamento_group.alignment = 'right';
bobinamento_group.add ('statictext', undefined, 'Bobinamentos: ');
bobinamento_group.alignChildren = "left";
     var rbtn1=bobinamento_group.add ("radiobutton", undefined, "Nº. 5");
     var rbtn2=bobinamento_group.add ("radiobutton", undefined, "Nº. 6");
     var rbtn3=bobinamento_group.add ("radiobutton", undefined, "Nº. 7");
     var rbtn4=bobinamento_group.add ("radiobutton", undefined, "Nº. 8");
     var rbtn5=bobinamento_group.add ("radiobutton", undefined, "Outros");
myWin.show()