I have been trying to practice with Triggers and adjusting a variable.
I create a True/False variable to change the state of a button on a revisited slide from Normal to Visited.
At first, when I revisited the slide, the button disappeared altogether and I couldn't get the triggers to change the state.
So I removed the triggers which adjusted the variable and changed the button state.
Then the triggers worked properly (the ones I had just deleted).
What am I doing wrong?