Ti.Desktop -Process - Env or Enviroment Argument

Hey,

does the env / "envioment" argument work on Ti.Desktop in createProcess? I have no success with that:

Example

_env = Ti.fs.getApplicationDirectory().nativePath()+_SEP_+"Resources"+_SEP_+"app"+_SEP_+"libs"+_SEP_+"convert"+_SEP_;
var convert =  {
        args : ['convert.exe','-density','200',
        _tmpFile.nativePath(),
        _tmpFile.parent()+"\\"+_Filename +"-%d.png"],
        env: {'PATH': _env },
        environment : {'PATH': _env }
                    };
        var process = Titanium.Process.createProcess(convert);

http://developer.appcelerator.com/apidoc/desktop/latest/Titanium.Process.createProcess-method