Reading Brainwaves eSense Attention/Meditation with Neurosky Mindwave Mobile 2

I was wondering if anyone could help me read out the Attention and Meditation values on the Mindwave Mobile 2 headset in an App Inventor app.

So far I have found little documentation on how to use the product with App Inventor. On the following link someone has developed an app to read out the EEG Power Spectrum. However, this is not interesting for me.

Does anyone have any idea how to get the eSense values for Attention/Meditation out of the headset instead?