Changing states using variables (Gamification course)

Hi all,

I am working on a module containing some gamification elements. One of the elements is a changing illustrated character, the patient. He grows more happy if you, the doctor, ask him the right questions, and angry if you ask the wrong ones.

The user gets a set of questions on which he can click. The question opens in a  lightbox slide (a new layer would also be fine). If it was a correct question, the patient grows a bit happier; if not, he gets a bit angrier. A radio button, placed outside the slide, checks for each question if the user had selected it before.
The state of the patient is also shown by a progress bar on the main slide, which goes from red to orange to green (=happy).

This is done by a number variable 'Tevredenheid', which starts at 3. A correct question adds ~1 to the variable 'Tevredenheid', a wrong one substracts -1.

Note; for testing purposes, the first 5 questions open in a lightbox, the last 5 questions open in a layer.

The state of the patient on the lightbox slide changes fine. But not on the main slide, nor does the progress bar do anything. What am I missing here?

The storyline 2 file is attached.