I have a form thats has custom submit code. I want the form to got to a success / thank you screen.
this is what i found on the threads as example to do this. It doesn’t  work in the simulator. 
phoneui.gotoScreen(‘order-completed’, “SLIDE_LEFT”);
My code below is my custom form function.      The second code box is one of the auto generated functions, and i tried it there also, but to no avail.   
Where do i put the gotoScreen code to make this work once form button is submitted? 
function ssendcustomEmail()
{
  var msg, subject, url, toEmailId, CompanyName;    
  //toEmailId =("surendar.apps@gmail.com");
 var ContactName = '${contact-name}';
  msg = ' Name:  ${contact-name} \n ' +
   ' Company Name: ${company-name} \n ' +
   ' Company Address: ${company-address} \n '+
   ' Email: ${email} \n '+
   ' Phone # ${telephone} \n '+
   ' Fax # ${fax} \n \n '+
   ' (Quote Request Items)------------------------- \n';
  // var partlist;
   //partlist.html('');
   for (i=0; i< ssParts.length; i++)
   {
   msg +='\n Type of Part - '+ ssParts[i][0] +'\n Model - '+ssParts[i][1]  +'\n Size - '+ ssParts[i][2]  +'\n Quantity - '+ ssParts[i][3]+'\n' ;
   };
  
    phoneui.composeEmailFromPage($('#m1-Quote_landing_screen3'), 'surendar.apps@gmail.com', 'DrillMaxOrder', msg);
   
    phoneui.gotoScreen('m1-products_parts', 'SLIDE_LEFT');
    }
};
phoneui.postSubmitForm_m1_Quote_landing_screen3 = function(isSuccess, data) {
  // add custom postubmission processing code here,
  // e.g., parse and process results & update UI controls with data as needed
  // return false to terminate form processing
  var result = true;
  if (isSuccess) {
    // process data
    result = true;
 phoneui.gotoScreen('order-completed', "SLIDE_LEFT");
  } else {
    // submit failed
    // data = error msg
    result = false;
  }
  return result;
}