That explains why you post videos with completely outdated workflows. I wonder why they are accepted by moderation. Not of help to the majority of users who do not use such an old version. How can yoyu have a trial version of Captivate 8? Only trials from the most recent version (11.5) can be downloaded.

Using the system variable or the command for Last Visited slide has to be used very careful, to prevent getting in an eternal loop.  Since 12 years I am an avid user of advanced and (since CP7) shared actions, my blog proves it very well.  In all those years I used Last Visited Slide workflows only in very particular situations, and always in a conditional action. Just a warning for other users, adding to this video.

BTW it helps when you mention the version you are using. It is pretty old, certainly not CP2019 nor CP2017. I can deduct it from the dialog box for Advanced actions which was refurbished in CP2017.

http://blog.lilybiri.com/advanced-actions-dialog-box-in-captivate-2017