Is there a way to create or use a "slide viewed" variable?

Question

Hi, I would like to write a conditional action based on whether or not a learner has visited slide. I realize I could write an individual variable for every single slide, but that would be a very slow and manual way to set this up. From a logic perspective, I wanted to set up a single project action that would look something like this.
If "slide viewed" = no, then do this...
If "slide viewed" = yes, then don't do anything.
Theoretically, it would seem possible since you can show a checkmark in the TOC next to a visited slide, but I can't quite figure out how to apply this to my project actions.
Is something like this possible in Captivate 6 or 7?

Answer 1

Disclaimer: I've only tried this with a couple slides, with very little error checking, but here's a single action approach I came up with.
First I created a tracker variable. Then I labelled each slide with a single, distinct letter/number/character. (Not sure if there are any characters you should stay away from; maybe someone else can tell you which ones might cause problems as a slide name/label). So you might run out of letters/numbers/characters if you have a ton of slides. If you have enough unique, one-letter names, however, this is the logic behind the advanced action:
If slide_tracker contains cpInfoCurrentSlideLabel
Then: continue
Else: do whatever you want it to do
slide_tracker = slide_tracker + cpInfoCurrentSlideLabel
So basically, if we've already been to this slide, the slide label will already been appended to our tracker variable. Thus it will contain the unique letter/symbol/number, and will do nothing (continue). If we haven't been to this slide, then we can do whatever we want to do and update the tracker to reflect that we've now been to this slide.
Again, a disclaimer: I spent only five minutes trying this out, so there may be unforseen issues with it.