Carrying Variable Values across slides

Hi there,

I'm currently working on quite a long, branching quiz that displays multiple variables that are meant to be "scores" that the player has with multiple people in a fictional workplace. Depending on decisions the player makes, those displayed scores rise and fall.

I am breaking up each scenario into a different scene, and each scene displays the score you have with each of the six people in the workplace. I have 6 variables set up which are meant to hold the scores.

What I would like to do is have a choice made in Scene 3 Slide 1 change the variable for a particular score, and have that score display the new value in any subsequent slide. Right now, I have a button click adding to a score variable, but as soon as it switches to a new slide, the variable switches back to the default 0 that I originally set.

Because of the complicated nature of the branching, I cannot manually set the variable to a specific value on each slide, as the player's movement through the game could means I may have no idea slide-to-slide what the scores are going to be.

Is it possible to capture a value change to a variable and have it carried, automatically, through subsequent slides and scenes?

Thanks!
Rob.

I have included a .zip file of my Storyline file.