A sample shows how to set the "DO NOT BACKUP" flag in TiSDK

"DO NOT BACKUP" flag for iCloud

var newDir = Titanium.Filesystem.getFile(Titanium.Filesystem.applicationDataDirectory,'mydir');
Ti.API.info("Created mydir: " + newDir.createDirectory());
Ti.API.info('newdir ' + newDir);
var newFile = Titanium.Filesystem.getFile(newDir.nativePath,'backup.txt');
if(newFile.exists()){
  newFile.write("I should be backed up!");
  newFile.remoteBackup = true;
//or we can set the whole folder to be iCloudable
//newDir.remoteBackup = true;
}
var newFile2 = Titanium.Filesystem.getFile(newDir.nativePath,'dontbackup.txt');
if(newFile2.exists()){
  newFile2.write("I should NOT be backed up!");
  newFile2.remoteBackup = false;
}
//-------------------------------------
//Test from your console
//-------------------------------------
// cd to your current directory
// xattr -p -x "com.apple.MobileBackup" *
// Output: backup.tex should return "00" and dontbackup.txt return "01"

DO NOT BACKUP flag for iCloud

var newDir = Titanium.Filesystem.getFile(Titanium.Filesystem.applicationDataDirectory,'mydir');
Ti.API.info("Created mydir: " + newDir.createDirectory());
Ti.API.info('newdir ' + newDir);
var newFile = Titanium.Filesystem.getFile(newDir.nativePath,'backup.txt');
if(newFile.exists()){
  newFile.write("I should be backed up!");
  newFile.remoteBackup = true;
//or we can set the whole folder to be iCloudable
//newDir.remoteBackup = true;
}
var newFile2 = Titanium.Filesystem.getFile(newDir.nativePath,'dontbackup.txt');
if(newFile2.exists()){
  newFile2.write("I should NOT be backed up!");
  newFile2.remoteBackup = false;
}
//-------------------------------------
//Test from your console
//-------------------------------------
// cd to your current directory
// xattr -p -x "com.apple.MobileBackup" *
// Output: backup.tex should return "00" and dontbackup.txt return "01"