upload progress?

[smolleyes]

hi

everything is in the title, can t get it working

just doing a simple

var form = yield formidable.parse(this);
console.log(form)
form.on('progress', function(bytesReceived, bytesExpected) {
      console.log(bytesReceived, bytesExpected)
});

TypeError: form.on is not a function

how can we do please?

thanks