How to set variable to add a value of 10 once
I am pretty new to variables and play with them. So my question might be stupid ;o)
I want to accomplish that after visting a slide that +10 is added to the variable "ProgressState" just once. So when the user visit the slide again (for example using back and forward) it should not add 10 again. Is this possible?
I figured out I can add +10 with a slide trigger, but this add's 10 points also when the user click previous and next.
What I want to accomplish is that after visiting the slide the value is added just once with +10. On other slides I want also add a specific value to this variable.