Can you correct my unfunction my script?

Question

Hi, everyone
I made a script for add a continued at end of paragraph but unfunction, call you please help to fix it?
var myDialog = app.dialogs.add({name:"add continueds",canCancel:true});
with(myDialog){
    with(dialogColumns.add()){
        with(dialogRows.add()){
           var mySelection = dropdowns.add({stringList:["Continued", "continued", "Cont'd","cont'd"], selectedIndex:0});
if (myDialog.show() == true)
main();
function main(){
var myObject;
var myCheckSelection = false;
if(app.documents.length > 0){
  if(app.selection.length > 0){
   switch(app.selection[0].constructor.name){
    case "InsertionPoint":
    case "Character":
    case "Word":
    case "TextStyleRange":
    case "Line":
    case "Paragraph":
    case "TextColumn":
    case "Text":
    case "Cell":
    case "Column":
    case "Row":
    case "Table":
     myObject = app.selection[0];
     if(myObject != "None")
else{
  alert("No documents are open. Please open a document and try again.");
function addContinueds(){
    if (mySelection.selectedIndex == 0){
   app.findGrepPreferences.findWhat = "(.)\\r";
   app.changeGrepPreferences.changeTo = "$1 (Continued)\\r";
   app.selection[0].changeGrep();
   app.findGrepPreferences = app.changeGrepPreferences = null;
    if (mySelection.selectedIndex == 1){
   app.findGrepPreferences.findWhat = "(.)\\r";
   app.changeGrepPreferences.changeTo = "$1 (continued)\\r";
   app.selection[0].changeGrep();
   app.findGrepPreferences = app.changeGrepPreferences = null;
   if (mySelection.selectedIndex == 2){
   app.findGrepPreferences.findWhat = "(.)\\r";
   app.changeGrepPreferences.changeTo = "$1 (Cont'd)\\r";
   app.selection[0].changeGrep();
   app.findGrepPreferences = app.changeGrepPreferences = null;
  if (mySelection.selectedIndex == 3){
   app.findGrepPreferences.findWhat = "(.)\\r";
   app.changeGrepPreferences.changeTo = "$1 (cont'd)\\r";
   app.selection[0].changeGrep();
   app.findGrepPreferences = app.changeGrepPreferences = null;
John

Answer 1

Hi, Jarek
I change it into this format (for in case of find-change two or more items) but not work: ---- why?
var
  mySelected = Number( app.extractLabel("mDialog") ),     //     previous selection's set
  myDialog = app.dialogs.add({name:"add continueds",canCancel:true});
  if ( isNaN( mySelected ) ) mySelected = 0;
  with(myDialog){
       with(dialogColumns.add()){
            with(dialogRows.add()){
                 var
                 mySelection = dropdowns.add({stringList:["01   Continued", "02   continued", "03   Cont'd","04   cont'd"], selectedIndex: mySelected});
if (myDialog.show() == true)
    main();
myDialog.destroy();
function main(){
  mySelected = app.insertLabel( "mDialog", String(mySelection.selectedIndex) );     //     to remember selection's set
  if(app.selection.length && app.selection[0].hasOwnProperty ("contents") ) addContinueds(); 
  else alert("Wrong selection. Please try again.");
function addContinueds() { 
  app.findGrepPreferences = app.changeGrepPreferences = null;
  switch (mySelection.selectedIndex){
       case 1:
  app.findGrepPreferences.findWhat = "(.)\\r";
  app.selection[0].changeGrep();
  app.changeGrepPreferences.changeTo = "$1 (continued)\\r";
  app.findGrepPreferences = app.changeGrepPreferences = null;
            break;
       case 2:
  app.findGrepPreferences.findWhat = "(.)\\r";
  app.selection[0].changeGrep();
  app.changeGrepPreferences.changeTo = "$1 (Cont'd)\\r";
  app.findGrepPreferences = app.changeGrepPreferences = null;
            break;
       case 3:
  app.findGrepPreferences.findWhat = "(.)\\r";
  app.selection[0].changeGrep();
  app.changeGrepPreferences.changeTo = "$1 (cont'd)\\r";
  app.findGrepPreferences = app.changeGrepPreferences = null;
            break;
    default:
  app.findGrepPreferences.findWhat = "(.)\\r";
  app.selection[0].changeGrep();
  app.changeGrepPreferences.changeTo = "$1 (Continued)\\r";
  app.findGrepPreferences = app.changeGrepPreferences = null;
            break;