That variable is a system variable, so it's probably READ ONLY and cannot be changed by Advanced Actions. You may be able to create another variable and assign the value of the system variable to it as a starting point before then subtracting the number of Help slides. Then you would need to display your user variable in text captions instead of the default system variable.
Thank you Rod.
So, I would set up a user defined variable... example: new_slide_total
But how do I set up the arithmatic?
Where 2 is the number of help pages.
Okay, that doesn't work (with or without the $$). It seemed like a logical approach.
How do I set the new page value?
It's been a while since I last used Captivate but I know I've done this before. Wish I could remember.
You need to use the Expression advanced action option.
Basically you first Assign your new variable with the value of the system variable that counts the number of slides. Then you use Expression to set the new variable to itself minus the number (e.g. 2) of Help slides.
Thanks for the solution Rod, I've created a video based out of this at http://youtu.be/2TBA-Ukji-A
Little bit off topic, but perhaps the list with system variables that I published, and that explains not only the meaning but also indicates which ones are read only, could help you in the future. Have a look at: